The Digital Innovations CleanDr Dust Remover 20 oz. Bonus Pack with Turbo Brush safely removes dust and debris from electronic devices without leaving any residue. Multi-purpose, moisture-free, odorless duster is great for sensitive home and office electronics. Clean keyboards, computers, printers, copiers, audio/video components, phones and other office equipment or electronic devices. Extension tube and Turbo-Brush attachment included for cleaning in hard-to-reach areas. Non-ozone depleting formula includes bitterant additive to deter inhalant abuse.