It is safe and easy to recycle camp fuel canisters. All you have to do is puncture a hole in the cylinder using a hammer and screwdriver.
Do not place wine or beer bottles into home recycling carts
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CrunchIt Fuel Canister Recycling Tool: This handy tool safely vents and punctures LPG fuel canisters so you can toss them in the recycling bin. Once
Jetboil CrunchIt Fuel Canister Recycling Tool | MEC
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HOW DO YOU DISPOSE OF YOUR USED CAMPING GAS CANISTER?