Recycling is the preferred method for disposing of empty N2O cream chargers. They are primarily made of steel, a recyclable material. Here's what you should do:

l Ensure the charger is empty: Make sure all the nitrous oxide has been used.

l Check local recycling guidelines: Contact your local recycling center to confirm if they accept empty N2O chargers. Some recycling facilities might have specific guidelines for these items.

l Recycle: If your local recycling center accepts them, place the empty chargers in the appropriate recycling bin.

Important Note: Avoid throwing empty chargers in regular household trash as they can pose environmental risks and might not be accepted in landfills.