How to Remove Pet Urine Stains and Odor from Concrete
Professional step-by-step instructions for removing pet urine from concrete. Includes supplies, timing, and safety warnings.
Supplies You'll Need
- TSP (trisodium phosphate)
- Large quantity of enzyme cleaner
- Plastic sheeting
- Stiff scrub brush
- Concrete sealer
- Garden hose
Step-by-Step Instructions
Clean the Surface
Clean the concrete surface with TSP (trisodium phosphate) solution: 1/2 cup TSP per gallon of hot water. Scrub with a stiff brush to remove surface residue. Rinse well.
Apply Enzyme Cleaner Heavily
Concrete is extremely porous and urine penetrates deep into the slab. Pour enzyme cleaner (Nature's Miracle or Rocco & Roxie) liberally — enough to soak into the concrete at least as deep as the urine went. For heavily saturated areas, use an entire bottle.
You need significantly more enzyme cleaner for concrete than for carpet — the concrete must be saturated.
Cover and Let Work
Cover the area with plastic sheeting to keep the enzyme solution moist. Enzymes need moisture to remain active. Leave covered for 24 hours minimum. For severe urine saturation, leave for 48 hours.
Rinse and Smell-Test
Remove plastic, rinse the area with clean water, and let dry completely. Once dry, do a smell test — uric acid odor returns when dry if crystals remain. If odor persists, repeat the enzyme treatment.
Seal the Concrete
After all odor is eliminated, seal the concrete with an epoxy or penetrating concrete sealer. This prevents future urine from absorbing into the slab and makes cleanup simple.
What NOT to Do
Never use ammonia-based cleaners on urine
Never assume bleach has fixed the problem (it masks but doesn’t eliminate uric acid)
Never seal concrete before the urine odor is fully eliminated (traps odor inside)
If the Stain Persists
If concrete has been repeatedly saturated with urine over months or years (e.g., in a pet foster home or boarding facility), the urine has penetrated deep into the slab. Professional ozone treatment or enzyme injection may be necessary. In extreme cases, a concrete overlay is the only solution.
Concrete saturated with pet urine is one of the toughest odor problems in cleaning. Beyond Clean Team uses industrial enzyme treatments, ozone generators, and concrete sealing to permanently eliminate urine odor from concrete. Don’t live with the smell — call us.
Prevention Tips
Seal concrete in pet areas before accidents happen
Use epoxy floor coating in garages and basements where pets have access
Designate a specific outdoor potty area for pets
Clean accidents immediately before urine penetrates the slab
Other Stains on Concrete
Pet Urine on Other Surfaces
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