Keep dust, lint, and other destructive elements away from computers and other electronics with this jumbo-sized disposable duster spray. The formula in this Dust-Off duster spray contains no CFCs, HCFCs, butane or propane and is 100 percent ozone-safe. Air duster is perfect for removing dust or debris from sensitive electronic devices. Contains bitterant to help discourage inhalant abuse. Has a oz. capacity. Contains two air dusters per pack. No CFCs, HCFCs, butane or propane. Includes two oz. cans. Jumbo disposable duster spray. Ideal for the largest cleaning jobs around the home or office. oz. spray can. Safety Data Sheet . Blow particles off electronic equipment with this 17-ounce Dust-Off duster spray.