It's okay, but not great
The biggest problem that this unit has is the amount of air it sterilizes.  If you have a small 8 by 8 by 8 foot bathroom ( 8 x 8 x 8 = 512 cubic feet of air)  it would literally take days, even weeks to disinfect the entire room.  So when someone says that it works in a few hours, you can pretty much say that it is a big exaggeration.  For the price of the unit, there should be at least three UV lights with a larger air sterilization chamber.  A unit this size would sterilize the air in a small garbage can in a day.  This is too bad.  It is a good idea, but the manufacturers made it so cheap and small, an ozone type air cleaner with a filter is the better way to go.
Rating: 2 stars