Shieldme 4-Ounce Duster (1004) Delivers a Concentrated Blast of Compressed Air To Clean Dust, Dirt & Debris From Sensitive Electronics & Hard-to-reach Areas Ideal For Cleaning Sensitive Electronic Devices Such As Keyboards, Fax Machines, Printers & Copiers Great For Dusting Shelves, Blinds, Ceiling Fans & Collectibles Contains A Bitter ant To Discourage Inhalant Abuse 4 Oz