The pack includes four dusters. The dusters are non-toxic and biodegradable. Promising review: “Like many of us, I have always had trouble cleaning and disinfecting my computer keyboards. I have finally found the answer. This computer gel is easy to use, priced right, and the best part is that it is reusable. The product spread easily onto my laptop keyboard, cleaning and disinfecting it. And it was easily removed with no residue. It also has a pleasant, floral smell.” —The Warrior Princess  Price: $12.99