Bought after the start of a dust storm in Hong Kong, it became difficult to clean manually. Now it works every day, the daily cleaning area is from 55 to 70 sq. M. I was skeptical about the expediency of rags and "smearing" dirt in all rooms, it turned out that everything is quite decent - indeed, a rag helps fight dust, but, to be honest in the review, it does not replace a full-fledged wet cleaning with chemistry. After the start of use - the difference is visible literally on the slippers, there is less dust - I won’t write more, otherwise it will turn out like in the review about the Samsung projection TV - in short - it really becomes cleaner;) The verdict is very simple - an absolutely irreplaceable thing, 100% worth its money!