[Consumer Alert] Why Cheap Solar Panels On Lawn Lights Are A Total Scam
#Consumer #Alert #Cheap #Solar #Panels #Lawn #Lights #Total #Scam[Consumer Alert] Why Cheap Solar Panels On Lawn Lights Are A Total Scam
[Smart Hacks] Repurposing Old Ladders Into Vertical Plant Racks[Trend Analysis] Why Backyard Staycations Are Outpacing Expensive Travel In 2026
[Consumer Alert] Why Cheap Solar Panels On Lawn Lights Are A Total Scam
The Allure of the $2 Pathway Light: A Modern Consumer Trap
I want you to close your eyes and picture a scene that almost every homeowner has lived through. It is a warm Saturday afternoon in late May. You are wandering down the seasonal aisle of your local big-box home improvement store, a half-empty cup of mediocre coffee in hand, when you run smack into a massive cardboard display. It is overflowing with sleek, black, modern-looking solar pathway lights. The packaging promises a "warm, inviting glow," "zero electricity costs," and "easy, tool-free installation." The price tag hanging below this mountain of plastic and glass is what really stops you in your tracks: $2.49 a piece. Or maybe, if you are lucky, a shrink-wrapped multi-pack of eight for the low, low price of nineteen dollars and ninety-nine cents. Your brain immediately starts doing the happy math. For less than the cost of a decent dinner out, you can transform your dark, boring front walkway into an elegant, illuminated runway that looks like a high-end estate.
You buy ten of them. You take them home, rip them out of their vacuum-sealed plastic shells, pull those little clear plastic battery tabs out of the bottom, and push them into the soft soil along your flowerbeds. That first night, as dusk settles, you stand on your porch and watch them flicker to life. It is magical. They cast a soft, albeit slightly bluish and dim, pattern of light onto your grass. You feel like a genius. You have bypassed the expensive, back-breaking labor of trenching low-voltage wire, buying a heavy outdoor transformer, and programming a timer. You have harnessed the power of the sun for the price of a couple of fancy lattes. You go to bed feeling victorious, thinking you have successfully beaten the system.
But then, reality slowly starts to creep in. Within three weeks, you notice that two of the lights in the middle of the run do not turn on anymore. By week six, the others are barely glowing by 10:00 PM, leaving your path pitch black just when you actually need to guide guests to their cars. By the end of the summer, the once-sleek black plastic housings have faded to a chalky, brittle gray, and the clear plastic lenses covering the solar panels have turned a cloudy, sickly yellow that looks like a headlight on a neglected 15-year-old sedan. When you finally pull one out of the ground to investigate, a rusty slurry of dirty water and battery acid drips onto your shoes.
This is not a fluke, and you are not cursed with bad luck. You have simply fallen victim to one of the most pervasive, highly profitable consumer scams in modern retail: the cheap solar lawn light. These products are engineered from the ground up not to illuminate your yard for years to come, but to survive just long enough to pass the retailer’s 30-day return window. They are designed to be disposable, destined for a landfill before the first winter frost even hits. Today, we are going to pull back the curtain on the smoke-and-mirrors engineering of these cheap outdoor lights and look at why they are a massive waste of your hard-earned money.
Insider Note: The Illusion of the "Lumen" Rating
When shopping for cheap solar lights, you will often see bold claims of "High Output" or "Super Bright LEDs" printed on the box, sometimes boasting "up to 15 lumens!" What these manufacturers do not tell you is that this rating is measured directly at the diode surface at the millisecond of initial activation under lab-perfect conditions. In the real world, once you factor in the cheap, cloudy plastic lens, the rapidly degrading battery, and the dusty solar cell, that "15-lumen" light actually outputs less than 1 or 2 functional lumens. For comparison, a standard candle produces about 14 lumens. You are literally paying for less light than a single matchstick.
The Dirty Secret of Amorphous Silicon (Amorphous vs. Monocrystalline)
What is Amorphous Silicon and Why is it Trash?
To understand why these cheap solar lights fail so miserably, we have to look at the very heart of the device: the solar panel itself. If you look closely at the top of a cheap $2 solar light, you will see a small, dark square that looks like a piece of dark tinted glass with a few faint lines running through it. This is an amorphous silicon solar cell. In the solar industry, amorphous silicon (a-Si) is the absolute bottom of the barrel. It is created by vapor-depositing a micro-thin layer of silicon gas onto a substrate like glass or cheap plastic. Because the silicon atoms are not arranged in a uniform, crystalline lattice structure, the electrons have a incredibly difficult time moving through the material to generate an electrical current.
I remember talking to a materials engineer who worked for a major solar manufacturer, and he described amorphous silicon as "the cardboard of the semiconductor world." It is cheap to produce in massive, continuous rolls—almost like printing a newspaper—which is why manufacturers love it. But its structural disorder means it is incredibly fragile on a molecular level. From the very second that sun hits an amorphous panel, a phenomenon known as the Staebler-Wronski effect begins. This is a well-documented physical process where the light itself causes metastable changes in the amorphous silicon, permanently degrading its efficiency by up to 30% within the first few weeks of outdoor exposure.
This means that the solar panel on your cheap lawn light is actually designed to lose a massive chunk of its power-generating capability almost immediately upon being exposed to the sun. It is a cruel irony: the very thing required to power the light is also actively destroying its ability to gather energy. When you combine this molecular degradation with the cheap adhesives used to laminate these panels, you get a recipe for rapid, catastrophic failure that no amount of cleaning or repositioning can ever fix.
+-----------------------------------------------------------------+
| SOLAR PANEL EFFICIENCY COMPARISON |
+-----------------------------------------------------------------+
| Cell Type | Efficiency % | Lifespan | Cost Factor |
+------------------+--------------+--------------+----------------+
| Amorphous (a-Si)| 5% - 8% | 1 - 2 Years | Micro-Pennies |
| Polycrystalline | 13% - 16% | 10 - 15 Years| Moderate |
| Monocrystalline | 18% - 22%+ | 25+ Years | Premium |
+-----------------------------------------------------------------+
The Efficiency Math: Why Your Lawn Lights Die at 10 PM
Let us put on our engineering hats for a moment and look at the brutal math behind solar energy conversion. A high-quality monocrystalline solar panel—the kind of premium, dark-blue-to-black cells with cut corners that you see on residential rooftops—boasts an efficiency rating of anywhere from 19% to 23%. This means it can convert nearly a quarter of the sunlight hitting its surface into usable electricity. An amorphous silicon panel on a cheap lawn light, however, struggle to hit a pathetic 5% to 8% efficiency rating when brand new. After a few weeks of sun exposure and dust accumulation, that number often plummets to a shocking 3% or less.
Think about what that means for a typical winter day. Let us say you get about four hours of decent, indirect winter sunlight. A tiny, 2-inch by 2-inch amorphous panel operating at 3% efficiency is only going to generate a fraction of a watt-hour of electricity during that entire window. It is mathematically impossible for that panel to gather enough energy to charge even a small battery to full capacity. If the battery cannot charge, the light cannot shine. It is a simple, unyielding law of physics that no marketing copy can bypass.
This is why your lights seem to work reasonably well for the first week of summer, when the days are long and the sun is directly overhead, but completely fail as soon as autumn arrives. The panel simply does not have the surface area, the crystalline purity, or the conversion efficiency to keep up with the daily energy drain. You are essentially trying to fill a five-gallon bucket with a leaky eye-dropper while someone else is constantly drinking from the bottom with a straw.
The Battery Bait-and-Switch: Nickel-Cadmium (NiCad) and Tiny Capacities
The Relics of the 1990s: Why NiCad Batteries Still Exist in Solar Lights
If the solar panel is the engine of the light, the battery is the fuel tank. And if you open up one of these cheap $2 pathway lights, you are likely to find a battery technology that the rest of the tech industry abandoned decades ago: Nickel-Cadmium (NiCad). NiCad batteries are heavy, environmentally toxic, and incredibly inefficient compared to modern Lithium-Ion (Li-ion) or even Nickel-Metal Hydride (NiMH) cells. Yet, they remain the undisputed king of the cheap solar light market. Why? Because they cost manufacturers literally pennies to purchase in bulk from factories clearing out old, obsolete stockpiles.
I remember cracking open a cheap solar spotlight a few years ago and pulling out a yellow AA battery that felt suspiciously light. When I scraped away the generic plastic wrap, I realized it was a NiCad cell rated at a pathetic 200 milliamp-hours (mAh). To put that into perspective, a standard rechargeable AA battery you buy at the grocery store today has a capacity of around 2,000 to 2,500 mAh. The battery inside that solar light had less than one-tenth of the capacity of a standard household rechargeable. It was a toy battery masquerading as a serious energy storage device.
Furthermore, Cadmium is a highly toxic heavy metal. When these cheap lights inevitably break and get thrown directly into the household trash, those millions of tiny NiCad batteries end up in local landfills. Over time, the cheap plastic casings crack, water seeps in, and that toxic cadmium leaches into the surrounding soil and water tables. By buying these cheap lights, we are not just wasting our money; we are actively contributing to a massive, slow-rolling environmental hazard all for the sake of a dim, temporary glow in our flowerbeds.
How NiCad Batteries Fail in Cheap Solar Lights:
1. Micro-Capacity: Rated at 200-300mAh, offering almost zero energy reserve.
2. High Self-Discharge: Loses up to 20% of its charge per month just sitting idle.
3. Severe Thermal Sensitivity: Swells in summer heat, freezes and drops voltage in winter.
4. Heavy Metal Toxicity: Contains highly regulated, toxic Cadmium that leaks into soil.
The "Memory Effect" and Chemical Degradation
One of the most frustrating characteristics of Nickel-Cadmium batteries is a phenomenon known as the "memory effect." If a NiCad battery is repeatedly discharged only partially before being recharged, it "remembers" that lower level of charge and permanently loses its ability to utilize its full capacity. Think about how a solar light operates: on a cloudy day, the light might only charge up to 40% of its capacity before night falls. It then drains down to zero. The next day, it charges to 50%. Within just a few weeks of these incomplete charge-discharge cycles, the battery's chemistry permanently alters, locking its maximum capacity to a fraction of its original, already-minuscule rating.
[Typical NiCad Solar Cycle]
Day 1: Charge to 100% ---> Discharge to 20% (Healthy)
Day 2: Cloudy Day ---> Charge to 50% ---> Discharge to 0% (Memory Effect Triggered)
Day 3: Sunny Day ---> Charge Maxes out at 50% (Permanent Capacity Loss)
Day 4: Light dies within 2 hours of sunset.
Additionally, outdoor batteries are subjected to extreme temperature swings. In the summer, the inside of a black plastic solar light housing can easily reach temperatures exceeding 130°F (54°C). In the winter, they freeze. NiCad batteries absolutely hate these extremes. The heat accelerates the internal chemical degradation, causing the electrolyte to dry out, while the freezing cold drops the battery's voltage output below the threshold required to light the LED. It is a double-whammy of chemical destruction that guarantees a lifespan measured in months, not years.
Pro-Tip: The "Drop Test" for Solar Batteries
If you want to know if your solar light has a cheap NiCad battery without opening it, pay attention to how light the unit feels. High-quality fixtures utilizing Lithium-Iron Phosphate (LiFePO4) or high-capacity NiMH batteries have a distinct heft to them. If the light feels like an empty plastic straw that could blow away in a gentle summer breeze, it is guaranteed to contain a bottom-of-the-barrel NiCad cell that will die before the season ends.
Planned Obsolescence in Plastic: The UV Degradation Nightmare
From Crystal Clear to Cloudy Yellow: The Quality of Cheap Lenses
Even if by some miracle the solar panel and the battery in your cheap light continue to function, they still have to contend with the physical housing of the light itself. To keep manufacturing costs down to pennies, these lights are constructed using cheap, non-UV-stabilized plastics like polystyrene or low-grade acrylic. When these plastics are exposed to the intense ultraviolet (UV) radiation of the sun, a chemical process called photodegradation occurs. The UV rays break the polymer chains within the plastic, causing it to lose its flexibility, become highly brittle, and undergo a dramatic color shift.
We have all seen this happen. The clear, pristine plastic lens that is supposed to let light shine through turns a hazy, tea-colored yellow. This yellowing is not just an aesthetic eyesore; it acts as a physical filter that blocks the light waves. It prevents sunlight from reaching the solar panel during the day, and it chokes out what little light the weak LED manages to produce at night. It is the equivalent of putting sunglasses over your solar panel and a thick wool blanket over your light bulb.
I remember walking through my neighborhood last autumn and seeing a house where the owner had installed dozens of these cheap lights along their driveway. Every single one of them had turned a crusty, semi-opaque yellow that looked like old parchment paper. The light struggling to escape was a sickly, dim orange-green glow that looked more like a biohazard warning than a welcoming home pathway. This is the inevitable fate of cheap plastic exposed to the harsh, unforgiving reality of the great outdoors.
+------------------------------------------------------------------+
| PLASTIC DEGRADATION TIMELINE |
+------------------------------------------------------------------+
| Month 1: High clarity, clean look, maximum light transmission. |
| Month 3: Micro-cracking begins, slight yellow tint appears. |
| Month 6: Severe yellowing, light output reduced by up to 50%. |
| Month 12: Plastic becomes brittle, cracks under light impact. |
+------------------------------------------------------------------+
Water Ingress: Why the First Rainstorm is the Death Knell
Water and electricity are ancient enemies, and nowhere is this battle fought more fiercely than inside an outdoor light fixture. High-quality outdoor lighting is engineered with robust silicone gaskets, tight-fitting threaded joints, and IP (Ingress Protection) ratings of IP65 or higher, meaning they are completely dust-tight and protected against water jets. Cheap solar lights, on the other hand, are lucky if they have a thin, poorly aligned foam ring separating the delicate electronics from the elements.
When the first heavy summer rainstorm hits, water does not just run off these cheap lights; it seeps into them. Due to the rapid temperature changes that occur when a cold rain hits a sun-baked plastic housing, a vacuum effect is created. This vacuum sucks moisture through the tiny gaps in the cheap plastic seams and around the edges of the solar panel. Once inside, the water has nowhere to go. It condenses on the inside of the lens, creating a permanent fog that blocks light.
Even worse, that trapped moisture immediately begins to corrode the incredibly thin, unsealed copper traces on the cheap circuit board inside. Within days, rust and green copper carbonate build up, bridging electrical connections and causing short circuits. When you pull apart a failed cheap solar light, you will almost always find a horrific swamp of rusty water, corroded wires, and mold growing directly on the battery terminals. It is a masterclass in terrible engineering.
Insider Note: The Myth of the "Weatherproof" Label
Do not be fooled by words like "weatherproof," "water-resistant," or "outdoor-ready" on retail packaging. These are marketing terms, not engineering standards. Unless a product explicitly lists an official IP rating (such as IP65, IP66, or IP67) that has been verified by an independent testing body, you should assume the fixture is about as waterproof as a cardboard shoe box.
The True Cost of "Cheap" (A Financial Reality Check)
Let us step back and look at this from a purely financial perspective. Many people justify buying cheap solar lights by saying, "Well, even if they only last a year, they are so cheap I can just buy more next year!" This is a classic example of the "Sam Vimes Boots Theory" of economic unfairness, applied to home improvement. Let us run the actual numbers over a five-year period to see just how expensive "cheap" really is.
Suppose you have a moderately sized front walkway that requires 10 pathway lights to illuminate safely. You decide to go the cheap route and buy ten $2.50 lights from your local discount store, spending $25.00. Because these lights are built to fail, you find that by the end of the first year, at least half of them are dead, and the rest look terrible. So, in year two, you buy another 10 lights to replace them. By year five, you have gone through five complete sets of cheap solar lights. You have spent $125.00 in cash, made five separate trips to the store, spent hours ripping old, broken plastic spikes out of your hard dirt, and spent five years looking at dim, ugly, unreliable lighting.
[5-Year Cost Comparison for 10 Pathway Lights]
Cheap Solar Option ($2.50/unit, replaced annually):
- Year 1: $25.00
- Year 2: $25.00
- Year 3: $25.00
- Year 4: $25.00
- Year 5: $25.00
TOTAL COST: $125.00 (Plus endless frustration & landfill waste)
Premium Solar Option ($35.00/unit, lasts 5+ years):
- Year 1: $350.00
- Year 2: $0.00
- Year 3: $0.00
- Year 4: $0.00
- Year 5: $0.00
TOTAL COST: $350.00 (Continuous, beautiful, reliable light)
Low-Voltage Wired Option (Professional DIY Kit):
- Year 1: $250.00 (Transformer, wire, 10 brass fixtures)
- Year 2: $0.00
- Year 3: $0.00
- Year 4: $0.00
- Year 5: $0.00
TOTAL COST: $250.00 (Brightest, most reliable, lifetime value)
Now, let us look at the alternative. You could spend that same $125.00 to buy three or four high-quality, commercial-grade solar lights made of powder-coated cast aluminum with real glass lenses and monocrystalline panels. Or, better yet, you could spend about $200.00 to $250.00 on a high-quality, DIY low-voltage wired LED landscape lighting kit. With the wired kit, you do the work once. The fixtures are solid brass or aluminum, the light is bright and consistent regardless of the weather, and they will easily last 10 to 15 years.
When you look at the math, the cheap solar light is not a bargain at all; it is an ongoing subscription to mediocrity. You are paying a continuous tax to big-box retailers to keep buying plastic garbage that ends up in your local landfill, while never actually achieving the beautiful, safe, well-lit home exterior that you wanted in the first place.
How to Spot a High-Quality Solar Light (The Buyer's Guide)
The Tech Specs You Must Look For on the Box
If you are absolutely set on using solar power for your outdoor lighting—perhaps because running wires to a specific part of your yard is physically impossible—you need to know how to separate the rare gems from the mountain of absolute garbage. The first step is to ignore the flashy lifestyle photos on the front of the box and flip it over to read the technical specifications. If a manufacturer is proud of the engineering inside their product, they will proudly list the exact specs. If they are hiding something, the specs will be conspicuously absent.
First, look at the solar panel type. You want to see the word Monocrystalline explicitly listed. If the box simply says "Solar Panel" or "High Efficiency Panel" without specifying the type, walk away. Second, look at the battery chemistry. You want to see Lithium-Iron Phosphate (LiFePO4) or, at the very least, high-capacity Nickel-Metal Hydride (NiMH). Avoid anything that says Nickel-Cadmium (Ni-Cd) like the plague. LiFePO4 batteries can handle thousands of charge-discharge cycles without developing a memory effect and perform exceptionally well in extreme temperatures.
The Premium Solar Spec Checklist:
- Panel Type: Monocrystalline (efficiency > 18%)
- Battery: LiFePO4 (minimum 1000mAh capacity)
- Housing Material: Powder-coated cast aluminum, stainless steel, or solid brass
- Lens Material: Real tempered glass (never polycarbonate or acrylic)
- Ingress Protection: IP65 rating or higher
- Warranty: Minimum 2-year manufacturer warranty
Finally, look at the lumen output and the color temperature. A high-quality pathway light should output at least 50 to 100 lumens to be functionally useful, and it should have a warm color temperature of around 2700K to 3000K. Cheap lights often have a cool, bluish color temperature of 5000K to 6000K because blue LEDs are cheaper to manufacture and appear brighter to the human eye in short bursts, even though they look incredibly harsh, unnatural, and cheap in a residential landscape.
Pro-Tip: The Weight Test
When shopping in a physical store, pick up the display unit. A high-quality solar light made with a cast-aluminum housing, a real glass lens, and a heavy monocrystalline panel will have a satisfying, solid weight. If it feels like you could crush it in your hand like an empty soda can, put it back on the shelf. Quality materials have physical mass.
Brands and Materials That Actually Last
When it comes to outdoor lighting, material choice is everything. The environment is incredibly hostile: hot sun, freezing snow, corrosive rain, lawnmowers, string trimmers, and neighborhood dogs. Cheap plastic does not stand a chance. If you want your lights to survive, you must look for fixtures constructed from premium materials like powder-coated cast aluminum, stainless steel, or solid brass. These materials do not degrade under UV radiation, they do not rust, and they can easily survive an accidental bump from a lawnmower or a stray football.
Real tempered glass is another non-negotiable requirement for the lens. Unlike plastic, glass will not yellow, cloud, or become brittle over time. It remains crystal clear for decades, ensuring that every single photon of light generated by the LED actually reaches your pathway, and every photon of sunlight reaches the solar panel. Glass is also incredibly easy to clean; a quick wipe with a damp cloth will remove any dirt or pollen, instantly restoring the light to its original efficiency.
+-------------------------------------------------------------------+
| MATERIAL DURABILITY CHART |
+-------------------------------------------------------------------+
| Material | UV Resistance | Impact Rating | Lifespan |
+------------------+---------------+---------------+----------------+
| Cheap ABS Plastic| Abysmal | Poor | 6 - 12 Months |
| Stainless Steel | Impervious | Excellent | 5 - 10 Years |
| Cast Aluminum | Impervious | Outstanding | 10+ Years |
| Solid Brass | Impervious | Indestructible| Lifetime |
+-------------------------------------------------------------------+
While these high-quality fixtures are undeniably more expensive upfront—often costing between $30 and $60 per light—they are a true investment. Brands like Volt Lighting, Signature Designs, and even some of the higher-end lines from established lighting manufacturers offer solar options that are built to the exact same physical standards as professional, hardwired architectural lighting. They feature replaceable batteries, modular solar panels, and warranties that are actually backed by real customer service departments.
Frequently Asked Questions (The Hard Truths)
Why do my solar lights work for a few hours and then turn off?
This is almost always due to a dying, degraded, or undercharged battery. In cheap solar lights, the tiny NiCad battery quickly loses its capacity due to the "memory effect" and temperature extremes. Additionally, the cheap amorphous solar panel degrades over time, meaning it can no longer generate enough current to fully charge the battery during the day, even in direct sunlight. The light turns on at dusk, quickly exhausts the tiny amount of energy stored in the degraded battery, and dies within an hour or two.
Can I upgrade the batteries in my cheap solar lights to make them last longer?
While you can physically swap out the cheap NiCad batteries for higher-quality NiMH batteries, this is usually a band-aid fix on a terminal patient. The weak, inefficient amorphous solar panel will still struggle to generate enough power to charge the new, higher-capacity battery. Furthermore, because the cheap plastic housing is not waterproof, the new battery will quickly become corroded and ruined by water ingress. It is like putting high-performance racing tires on a rusted-out economy car with a blown engine.
Are there any solar lights that actually work in winter?
Yes, but they require high-end components. To work reliably in the winter, a solar light must have a highly efficient monocrystalline solar panel that can generate power even on overcast days, a high-capacity LiFePO4 battery that does not lose voltage in freezing temperatures, and intelligent circuitry that automatically dims the LED on cloudy days to conserve power. These lights exist, but you will not find them in the bargain bin of a big-box store; they are specialized, commercial-grade fixtures.
Is it better to buy cheap solar lights or just go with a low-voltage wired system?
In almost every single scenario, a low-voltage wired system is vastly superior. While it requires slightly more effort to install upfront, a wired system provides consistent, beautiful, bright light 365 days a year, regardless of the weather. Modern LED low-voltage systems use incredibly little electricity, meaning they cost only pennies a month to run. When you factor in the constant replacement costs of cheap solar lights, a wired system is actually the more economical choice over the long term.
The Final Verdict: Stop Throwing Your Money in the Dirt
At the end of the day, we have to look at our relationship with consumer goods. We live in a world that has become increasingly comfortable with disposability. We buy cheap fast-fashion clothes that fall apart after three washes, cheap electronics that break after a year, and yes, cheap plastic solar lights that turn into toxic landfill waste before we even have a chance to enjoy them. But outdoor lighting is not a temporary decoration; it is a permanent, functional part of your home's architecture, security, and curb appeal.
When you buy those $2 pathway lights, you are not outsmarting the system. You are participating in a highly engineered cycle of waste that profits off your desire for a bargain while leaving your home looking dim and neglected. You are buying a product that is literally designed to fail, made of toxic materials that will outlive us all in a landfill, all for a fleeting moment of satisfaction on a warm summer evening.
It is time to break the cycle. If you cannot afford to install a high-quality, professional-grade landscape lighting system right now, that is completely okay. It is far better to have no lights at all, or to save up your money over time to buy two or three truly beautiful, high-quality, long-lasting fixtures, than to litter your beautiful garden beds with cheap, yellowing plastic stakes that scream "temporary" to everyone who drives by.
Your home is your sanctuary, your biggest investment, and a reflection of your personal pride. Treat it with the respect it deserves. Steer clear of the seasonal aisle trap, ignore the siren song of the $2 solar light, and invest in quality lighting that will beautifully, safely, and reliably illuminate your path for years to come. Your wallet, your home, and the planet will thank you.
[Expert Advice] Choosing Between Natural Stone Pavers And Concrete Fire Pit SurroundsPro-Tip: How to Upcycle Old Solar Light Housings
If you already have a collection of cheap, dead solar lights cluttering up your garage, don't just throw them in the trash. You can pop out the dead solar/LED insert from the top of many fixtures and replace it with a standard battery-powered outdoor LED tea light or a small candle. This gives you a charming, hand-lit lantern effect for outdoor parties and dinners without contributing to the plastic waste cycle.
