Urine Off Small Animal Formula, the #1 Veterinarian recommended for urine odor and stain remediation, breaks down dried uric acid crystals the primary source of odors caused by small animals urine. Not a perfume or cover-up, it actually eliminates all three major components of small animal urine; urea, uric acid, and urochrome. It even works on ferret urine, considered by many to be one of the most potent odors caused by small animals. Urine Off is also ideal for cleaning cages and areas where small animals are kept. Available in 500 ml (16.9 oz) Spray bottle.