The longer that dirt and soot sit in a fireplace, the harder it will be to restore the natural colour of the bricks. Brick fireplaces invite guests into a room with their warm and attractive appearance, but brick absorbs stains more than other materials, and it will become dirty quickly. In order to keep the fireplace hearth bricks in good shape, you will need to clean the hearth regularly. You can clean the hearth with common ingredients in your home instead of buying an expensive cleaner from the store.
Place a dust sheet on the floor around the fireplace. This will protect the floor while you clean the brick fireplace hearth.
Fill a one-gallon bucket with half a gallon of water. Add one capful of bleach to the water.
Place a scrub brush into the bleach solution. Scrub the fireplace hearth. Continue to dip the scrub brush and clean the hearth until you remove the dirt and debris. You will need to use a considerable amount of hard work to finish the job if you have a lot of build-up.
Use a clean cloth to wipe the hearth down. Soak the cloth in warm water, and wipe the hearth down to remove any loose residue. If you still notice dirt and debris, then try cleaning the brick fireplace hearth with a foaming bathroom cleaner.
Lay a dust sheet on the floor around the fireplace. Use a wet sponge to apply water to all of the bricks. Continue to dip the sponge in water and soak the bricks until they all appear wet.
Spray the foaming bathroom cleaner onto the wet bricks. Allow the bathroom cleaner to stay on the bricks for five to 10 minutes.
Use a scrub brush to scrub the bathroom cleaner into the brick. Scrub the cleaner over the brick with a circular motion from the top of the fireplace down to the bottom.
Dip a clean sponge into a bucket of water. Wipe the fireplace down to remove the foam from the brick. Work your way from top to bottom, and clean the sponge off in the bucket of water once it becomes saturated with the dirty foam.
Apply the bathroom foam cleaner to any areas that remain dirty. Repeat the process with clean water and sponges.