Mr Muscle Oven Cleaner has the powerful cleaning action to make your oven sparkle. It's a foaming product with a unique self scouring formula which can be used on cold ovens (no need to heat up first).It works by emulsifying the baked on grease, food and spills which allows you to simply wipe it away with a damp cloth, and no scraping is requiredAs this product is formulated to tackle one of the toughest jobs in the kitchen, and, as with all cleaning products, it is important to read the instructions carefully before use