Title: Does not work as reviewers stated.
Review: I don't know why they say that this is a good air purifier when in fact I do not see any dirt on the filter. Maybe I got a lemon or a unit that doesn't work. I am using this unit for more than two months but whenever I inspect the filter I don't see any dust trapped on it. Are those bogus reviewer or not...you decide.
Is this product review negative?