Favorite product, I have known it for years since I lived in Germany. With this, I clean the oven in the kitchen mainly because I hate the smell of chemical cleaners. I spray the walls of the warm oven and leave it for 15 minutes to act. With the green side of the sponge (or with the wire brush for stubborn dirt), I scrub a little and then wipe the surfaces with a microfiber cloth simply dampened with water. It cleans! Without the whole kitchen smelling of chemicals, without difficulty, without chemistry. I love it and highly recommend it, just like all the products of this specific company!