How to Remove Urine Smell From Concrete Subfloor

Step 1

Remove any carpeting or non-adhesive flooring to expose the concrete subfloor.

Step 2

Sweep the floor with a heavy-duty broom to remove loose dirt. Then vacuum the entire concrete subfloor using a shop vac.

Step 3

Use a solution of a heavy-duty floor cleaner, bleach and warm water. Add ½ cup of bleach for each gallon of water.

Step 4

Mop the floor in sections, changing the water when it is dirty. Continue mopping until the entire floor is cleaned.

Step 5

Use the shop vac to pick up excess water. Let the floor dry overnight.

Step 6

Mix 1 cup of white vinegar for each gallon of water. Apply this solution to the floor and let the floor dry.

Step 7

Wait until the smell of the vinegar is gone. Check the area again for odors. Walk around the concreted area and mark the areas of odor with chalk.

Step 8

Apply full strength vinegar to any area of the concrete floor that is still holding the odor. Let the vinegar dry. Repeat this step until all urine odor has dissipated.
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