INU® Pet Odor Spray is safe to use on all surfaces! Spray directly to penetrate deep into crevices, carpets, or foam padding. For odors on hard surfaces, use liberally and scrub to penetrate deeply. For stains, spray into stained area and scrub lightly with a cloth or stiff brush. For laundry, add 3 ounces to wash cycle. Do not mix with other household chemicals. For lawns, spray directly on urine spots and water your lawn immediately after.