This is very powerful. I live in the country and this generates the same powerful force as our outdoor blower. Don't use this indoors unless you have a maid cleaning the whole house twice a day. Be sure to wear an N-97 mask and safety goggles if necessary. I had to turn on my room air purifier for an hour after using it on books and stereo for 5 minutes and I regularly hand wipe them down. I would be afraid to use it on a computer keyboard. Or on the blinds, unless the aforementioned maid wiped them down with a rag daily. To sum it up: It is VERY EFFECTIVE and I will be using it outdoors to clean deck leaves, fan blades, books and anything else I can remove from my house. The first. I sneezed and gasped for several hours after a short application. If only there were a way to capture airborne dust, that would be ideal. In the meantime, I'll buy a smaller, less powerful attachment for my keyboards and computer or stereo - or settle for less environmentally friendly electronics cans. Store.* The included "Super Clean" keyboard cleaner proved very useful and blows less dust into the air,
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