this is truly amazing i put it in my bedroom which also has 2 cats/liter box and i have Asmara, and also my cat sneezes. the cent is very very nice, with in a few hours i could smell the difference in the rooms air quality, my cat has also stopped sneezing and the odor from liter box is even so much fresher, i my self fee so much better in my breathing of the room air,  best thing i ever bought to help my 2 cats and I.   this is well worth the price and very nice quality as well So very pleased, thank you for offering this Air Purifier.