How to Remove Cat Urine Smells & Odors from Concrete

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It is difficult to remove cat urine odor in general, but one of the most challenging situations occurs when the urine soaks into the extremely porous surface of concrete. Because odor-causing bacteria reach far below concrete’s top layer, any type of urine or excrement stain can leave a stubborn and noticeable smell. Removing the smell of cat urine successfully is not easy work, but it can be done by following a few simple steps. Before you tackle urine-tainted concrete, you’ll need to collect a few basic items.

Cat Urine vs. Concrete: What You Will Need

Wet Vacuum
One of the most important tools for battling cat pee in concrete is the wet vacuum or carpet shampooer. If you do not own one, you can usually rent one from a grocery store or other retailer. These machines give you powerful scrubbing action plus the ability to automatically dispense a liquid cleaner; this is vital for reaching deep into the porous concrete and neutralizing odor. If it is impossible to obtain a wet vacuum, you can use brushes or mops as a substitute, but it will require more effort and will not be as effective.
Sturdy, Push Brush / Brush Mop
brush-mopIf you are not using a wet vacuum, use an industrial brush mop. These look similar to rakes but have rows of strong bristles on the end.
Standard Garden Hose
Access to an outdoor water source is also required.
Hose-End Sprayer Attachment
This item attaches to the end of your garden hose and connects it to a bottle or container of concentrated liquid. Hose end sprayers are commonly used for dispensing weed killer or fertilizer and are sold in home and garden stores.
Powerful Urine Odor Removal Product
The level of your success depends partly on the use of a quality odor remover. For limited or minor problems, a product like Simple Green cleanser or even dish detergent may be adequate, but for serious odor situations, consider tri-sodium phosphate (TSP) or enzymatic odor remover.
OdorXit is a safe, organic odor remover product that you will use to create a treatment for the concrete in the final step of odor removal.

The Odor Removal Process

After gathering all the necessary materials, you are fully armed for battling the intolerable smell of cat pee. Choose a dry, moderately warm day for the best results.

Step One: Cleansing

Pour the Simple Green, TSP or other odor remover liquid over the stained areas. Be sure to include all areas around the stains even if you don’t think they were affected. Remember, the porous nature of concrete causes odors to spread. You can use your wet vacuum or brush mop to work the solution into the pores with as much force as possible. Reserve some odor remover for reapplication in case the liquid becomes absorbed into the surface before you get a chance to work it into all areas completely.

Step Two: Rinse

After every inch is treated, rinse the entire area with your garden hose. Direct the rinse water toward a drain or to the street to wash the urine residue and bacteria away from the area.

Step Three: Drying Time

Step three requires no effort. Simple let the area dry naturally without the use of fans or heaters. Do not try to expedite the drying time; allow it to sit untouched overnight. The next morning, you may find signs of powdery white residue on the dried surface; make note of the location. These are areas that have the highest saturation of urine, and they should receive special attention.

Step Four: Treatment

To make a special concrete urine removal treatment, add 12 ounces of enzyme-based odor remover and four ounces of OdorXit to a gallon of water. This will treat extreme pee smells and help restore your concrete surfaces to normal. Using your hose end sprayer, cover the affected surface with enough solution to remain wet for about 10 minutes. If it begins to dry out, reapply. Soak as much of the porous surface as possible. Focus more intensely on any areas that seem to absorb liquid slowly or where white powder was noted earlier.

Managing Problem Spots

Cat urine can become oily and clog the pores of concrete; this makes it more difficult to get the cleansers and odor removers to their target. If you note that some places absorb poorly, you may need to re-treat these areas separately, starting over from step one.

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