99% deodorization Our Smart Odor Remover used new safe deodorization technology, and the deodorization rate reaches 99%, which can solve the unpleasant odor of your cat toilet. Odorless & 100 % Cat Friendly The Odor Remover eliminates the smell by using ozone (3mg/h) and a negative ion generator. Ozone can oxidize and decompose those pesky odors. And negative ion can also reduce litter dust. The Odor Remover wont generate any harmful fumes or unwanted smells, and Non-toxic fragrance. Ultra-Quiet & Dust-Free The silent design below 20dB ensures that your cat is not disturbed. It's emissions are completely within the standard range and pleasant environment for you throughout the day. Auto On/Off & Smart Sensor Odor Remover eliminator has equipped with a high-sensitivity biosensing system, 360 smart identification of the moment the cat enters and exits, and when the cat approaches, the smart pet odor eliminator will turn off automatically. After the cat leaves, it restarts to eliminate the smell efficiently. Versatile & Convenient Pet Odor Remover eliminator are designed for various small spaces where smells are always produced, like pet's litter box or kitchen, wardrobes, shoe box, toilet, other animals' living area etc.