Odor eliminators remove all types of malodor and restore a pleasant interior atmosphere. They effectively eliminate odors caused by urine, feces, decay, rancidity, fire, tobacco smoke, cooking, and mildew. Some of these products attach to Protein-based stains, which makes them devour food, grass, soil, blood, and pet smells. Additionally some odor eliminators are specially formulated to quickly remove Tannin stains (coffee, tea, wine, etc.) and are pH neutral. Products come in both liquid and aerosol form.