Our all-purpose cleaners contain vegetable acids and surfactants. It can remove stubborn stains, rust and oxides from a variety of surfaces, including kitchens, bathrooms and more. The way to use it is very simple: 1. Spray the spray on the surface. 2. Wait a few seconds for it to penetrate. 3. Brush away dust and rust. 4. Finally remove all dirt with a damp cloth. And will not cause damage to the metal surface.