I found the cost for one bottle of air duster remover was expensive. My keyboard needed the air remover urgently so I took the hit. The staples I went to did not have any other brands to buy as an alternative. Before I used the bottle you need to remove a piece on the top to be able to use. I found that the piece was not user friendly to remove. For someone that does not use this product regularly I can see how bit can be intimidating that they might break the top of the bottle instead. Regardless the product does the job that it is meant to do.
I love this product very much...it does a great job on the computer screen it leaves no streaks just a nice clean screen...I also use it on my eye glasses and wow I was shocked at how clean they tuned out...it was so clear with no streaks any place...it was like the lens vanished they were so clean...I would recommend this product to anyone especially if they ware eye glasses... I would give it a total of 10 stars because it keeps my eye glasses so clean for me... MissKittyKat in California
Living in the Desert clime of AZ Dust is the enemy of all Electronics I have lost two TV's since moving here in 2006 learned that we need an item like this to maintain our electronics and since it works for me it is the solution to my Dust problems.