A non hazardous concrete cleaner and brightener. Formulated for cleaning of new masonry and concrete. This product is safe to use and store and contains no harsh odors. Used as described, in the directions, there should be no significant impact on the plants or soils of the job site but protecting landscape should be taken. Rest Con is safe for virtually any type of brick, block, stone, or pre-cast. Rest Con will solve a host of problems including efflorescence, lime putty, and most mineral stains.