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How to Remove Deposits in a Urinal

Updated July 18, 2017

Urine stains and odours, due to the uric acid crystals that urine deposits, can be very difficult to remove from a surface. Traditional cleaning products, such as soaps and strong chemicals, are ineffective at breaking down these crystals; thus, to remove deposits in a urinal, you need enzyme-based cleaners, specifically designed to bind to and break down the uric acid crystals while destroying the bacteria around uric acid crystals that causes odour. You can easily obtain these products online or in your home supply store.

Soak up as much urine as possible by blotting with paper towels.

Soak the affected area with enzyme-based cleaner.

Remove residue, after urine odour and stain are removed, by blotting with a damp paper towel.

Saturate the area with enzyme-based cleanser.

Cover with cling film for 24 to 48 hours, allowing the product to stay moist and effective longer.

Allow to air dry. If the stain is still visible after air drying, repeat Steps 1 and 2 until the deposits are gone.

Remove residue, by blotting with a damp paper towel.

Things You'll Need

  • Enzyme-based cleaner for uric acid crystals
  • Saran wrap
  • Paper towels
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About the Author

Tricia Lobo has been writing since 2006. Her biomedical engineering research, "Biocompatible and pH sensitive PLGA encapsulated MnO nanocrystals for molecular and cellular MRI," was accepted in 2010 for publication in the journal "Nanoletters." Lobo earned her Bachelor of Science in biomedical engineering, with distinction, from Yale in 2010.