Dishwasher, Dish Set, Can be used on all finished surfaces including woodwork, tile, laminate, porcelain, fixtures, sealed wood floors, natural and engineered stone, including granite. We do not recommend using this product on unsealed natural stone. When dealing with painted wood surfaces or wood furniture with surfaces that could have a compromised seal, such as antique wood furniture, we would recommend to first test the Countertop Spray in an inconspicuous spot to make sure there is no adverse effect before using the product. See more, Caldrea Dish soap is appropriate for grey water systems., Floors,Tile,Countertop