To use this product, shake it well before each use and don't dilute it. For best results, use a Urine Off Urine Finder Light to find odor - causing deposits. Don't mix it with other cleaners and store it in a cool place. First, always check an inconspicuous area to make sure the color won't fade. Absorb fresh urine with an absorbent pad or paper towel. Then, saturate the soiled areas past the stain's edge using the right applicator for the surface. Let Urine Off work: it takes a few minutes for fresh deposits, and for old stains, cover the area with plastic and leave it overnight. Old stains might need multiple treatments. After that, remove the residue with water. For hard surfaces and upholstery, use the sprayer nozzle and scrub with a brush. For carpets, use the carpet applicator cap to spot - clean before shampooing. Remember, uric acid can damage the dye in some fibers, so you might notice a color difference even after the urine is removed.