@sarae @mycorrhiza Winix filters show up on Woot all the time with a pretty good discount. The most recent one I bought has two pre-filters, one disposable and cheap and the second a washable plastic mesh. This works great for houses with pets. But I have several older ones, and they're fine, too. I will say that the fan died in one after about two or three years.I also don't like the bright blue LEDs that can't easily be turned off. Requires tape or surgery to fix. A common problem, though.