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How to Clean Urine Stains on Concrete

By M.T. Wroblewski ; Updated September 21, 2017
Protect your skin from coming into contact with strong cleaners.
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If you share your home with a four-legged friend, it's probably only a matter of time before you discover a urine stain on your concrete patio, sidewalk or garage floor. If you've blotted up the spill with paper towels and have tried to remove it with a detergent, don't feel discouraged. You'll have to turn to a “big gun” cleaning agent, but by exercising caution while you use it, you can remove all traces of the stain.

Step 1

Put on a long-sleeved shirt, long pants and gloves to protect your skin. Put on plastic goggles to protect your eyes and a face mask to protect your respiratory system.

Step 2

Pour 1/2 cup of trisodium phosphate into a bucket. Run the faucet until the water runs hot. Then fill the bucket with 1/2 gallon of water.

Step 3

Pour the solution directly onto the urine stain. Let it break down the acid crystals in the urine for about 20 minutes.

Step 4

Scrub the stain with a hard-bristled brush. Rinse the residue with water.

Step 5

Repeat the cleaning process, if necessary, until the stain is gone.


Things You Will Need

  • Long-sleeved shirt
  • Long pants
  • Gloves
  • Eye goggles
  • Face mask
  • Trisodium phosphate
  • Bucket
  • Hard-bristled brush


  • TSP can burn. If it accidentally comes into contact with your skin or eyes, flush the area with cool water.

About the Author


With education, health care and small business marketing as her core interests, M.T. Wroblewski has penned pieces for Woman's Day, Family Circle, Ladies Home Journal and many newspapers and magazines. She holds a master's degree in journalism from Northern Illinois University.