This is the portable device that uses UVC-light to eliminate 99.99% of the bacteria that causes unpleasant odors. Unlike sprays that merely mask odors with perfumes and chemicals, this unit uses UV photocatalyst technology to safely impair bacterial DNA and kill the microorganisms that cause unpleasant smells. Ideal for placement near litter boxes or trash cans, the lightweight and compact purifier plugs into a USB port or charges via an included USB cable. Prevents odors and allergens within a 1'-3' range. 2" H x 2 1/2" Diam. (2 1/2 oz.)