To make your own concrete or brick floor cleaner, combine 1 cup of ammonia, 1/4 cup of all-purpose cleaner, such as Simple Green, and 1/2 gallon of water. Use a sponge mop and work the solution into the floor. Make sure to wear gloves and work in a well ventilated area or wear a ventilator. Rinse well with clear water and allow to thoroughly dry. When completely dry, apply a new coat of sealer to protect the surface and reduce the need for future cleaning!