Exterior stoneware cleaning without chemicals. Natural and artificial stone Paving and cobble stone Porcelain stoneware and ceramic slabs Wood and WPC terraces Walls made of stone and wood Steel railings and metal covers We clean your driveways, terraces, walkways, stairs and concrete or stone walls and rid them of moss, lichen, algae, dirt and weeds, even chewing gum. A treatment against the return of moss as well as impregnation (= lotus effect) is also possible