The Thornell K.O.E Kennel Odor Eliminator Fresh Scent Concentrate eliminates, not masks, pet odors, including old, impregnated animal odors from kennels, cages, runs, walls, and other large areas. Available in a concentrate, this pet odor eliminator can be effectively used in pump-up lawn and garden sprayers or high-pressure washers to cover larger areas. Thornell specializes in creating products that permanently eliminate malodors - complex blends of natural ingredients that work through various methods and actions. Its products are not masks and they are not enzymes. Each Thornell pet odor neutralizer is specially formulated for a unique purpose.