What Should I Do with the Canister After It's Empty? Proper disposal is just as important as the emptying process itself. For Small, Single-Use Cream Chargers: Once completely empty, these small metal cartridges are often recyclable. Check with your local recycling center, as many municipal programs accept them in the metal recycling stream . Some local authorities may also allow them in general waste, but they are typically extracted and recycled as metal during the waste treatment process . For Large Cylinders: Empty cylinders should not be placed in regular household bins. They often require disposal at a designated civic amenity site or via a specialist hazardous waste disposal service . Contact your local authority for specific guidance . The pressure should be fully released before disposal, and it's advised to keep the cylinder secured upright until it can be properly handled . https://www.rotasswhip.com/how-to-safely-empty-a-nitrous-oxide-canister