If your dog urinates in your home, you know how difficult it can be to get the stain and smell out of furniture, carpet and bedding. Dog urine is a protein stain that breaks down with enzyme-based cleaners. Brick is a porous material that doesn't allow you to get down in there and scrub, like carpet and furniture. The way to get dog urine out of brick and eliminate the stain and smell is to follow certain steps using an enzyme-based cleaner.
Soak up any excess dog urine with an old towel. Wipe up any urine that is on top of the brick as quickly as possible. If the urine stain has dried, you will need to resoak it with water and then wipe it up.
Mix a strong concentration of the enzyme cleaner with a bit of water or according to the instructions. The concentration has to be strong to break down the protein stain and remove the lasting smell.
Pour the mixture slowly onto the urine stain until it no longer soaks into the brick and surrounding grout and instead pools on top of the brick. Allow time for the mixture to soak in and then pour again. Because brick is porous material, thoroughly saturating the brick will take a little time.
Soak another old bath towel with the enzyme cleaner and lay it over the stain, covering the affected brick. Leave the towel in place until it has dried naturally, which may take a full day or more.
Resoak the affected area completely. Then use a scrub brush to lather up the area and pat dry with a different dry towel, absorbing the liquid that comes to the surface.
Use 1/3 cup of bleach to 1 gallon of water to mop the area with bleach water, which will help eliminate any smell that might be remaining.