Pressurized Duster rids hard-to-reach areas of dust, dirt and debris. When used as directed, duster is moisture-free, oil-free and residue-free. 152A propellant is nonozone depleting and contains no CFCs. It contains a bitterant agent to help prevent abuse. Duster includes an extension tube to reach tight areas. Do not use on paper shredders or electrical motors as the vapors may ignite.