Aerosol Cans Hazardous Waste Curbside Recycling FREE Household Hazardous Waste (HHW) and Mattress Collection Event (Hercules, CA) – ONE DAY ONLY! Saturday, June 25, 2022 More Info Get Reminder If empty, place your aerosol can in your recycling cart. Otherwise, take to an HHW facility. It's Hazardous Waste If there’s even a drop of liquid left, an aerosol can is still pressurized and can explode, so dispose of it as hazardous waste. Did You Know? Aerosol Cans Still Aren't Green The United States stopped using chlorofluorocarbons (CFCs) in aerosol cans in the 1970s because they were depleting the ozone layer. Yet aerosol cans still contain chemicals that contribute to climate change, such as compressed gases and hydrocarbons.