The invention relates to a method for cleaning surfaces of polyolefin-based materials soiled with food, particularly dairy products. More specifically, the invention relates to a method for cleaning materials based on one or more halogenated or non-halogenated polyolefins and soiled with food, particularly dairy products, which method is particularly safe for the environment, but also for the soiled polyolefin-based material with minimal wear and tear. According to the invention, the soiled material is brought into contact with an aqueous composition based on alkane sulfonic acids having between 1 and 4 carbon atoms.
