ELEPHANT SNOT Graffiti Remover is one of five "Graffiti Max" products, each custom formulated for specific removal needs. If it is a "porous" surface, then ELEPHANT SNOT Graffiti Remover is the right choice for the job.It is the workhorse for the most difficult of porous surface removal requirements - ELEPHANT SNOT penetrates deeply into concrete, cement, brick, grout, stone, virtually anything porous to dissolve and loosen all types of tags, and in many circumstances, simple water hose pressure will do the job. Recommended for removal on: Brick, mortar, masonry, cement, concrete, stucco, terrazzo, landscaping pavers, porous tile. Natural stone surfaces such as granite, marble, sandstone, rocks, both porous/rough or polished. Also effective on: glass, ceramic, porcelain, glazed tiles, porous tile, grout. Additional Details ------------------------------ Product description: ELEPHANT SNOT Graffiti Remover is one of five "Graffiti Max" products, each custom formulated for specific removal needs. If it is a "porous" surface, then ELEPHANT SNOT Graffiti Remover is the right choice for the job.It is the workhorse for the most difficult of porous surface removal requirements - ELEPHANT SNOT penetrates deeply into concrete, cement, brick, grout, stone, virtually anything porous to dissolve and loosen all types of tags, and in many circumstances, simple water hose pressure will do the job. Recommended for removal on: Brick, mortar, masonry, cement, concrete, stucco, terrazzo, landscaping pavers, porous tile. Natural stone surfaces such as granite, marble, sandstone, rocks, both porous/rough or polished. Also effective on: glass, ceramic, porcelain, glazed tiles, porous tile, grout.