Safe and compliant with recycling standards jetboils crunchit butane canister recycling tool is ideal for all of your expeditionsjetboils crunchit butane canister recycling tool is safe fool proof and compliant with recycling standards crunch it punctures jetboil and jetpower and certain other butane fuel canisters rendering them ready for the recycling bin and re melting and reformation this tool is so safe it vents fuel prior to puncturing minimising risks to you and others around