We have the equipment has now smelled 4 months in operation in the bathroom, because there is the litter and otherwise unpleasant. Sometimes I had no desire to take a shower with the smell, but there is no other suitable place in the home for the cat box. The device works beautifully. We once had bought a cheap part of Pearl, which has only yet a corrosive smell of ozone. We have suggested that it has launched super much ozone. With this device, the smell is quite pleasant. Cleaning is easy. And our bathroom smells now rather fresh.