ANSUL® K-Guard extinguishers contain Ansulex™ liquid fire suppressant which quickly knocks down flames, forms a vapor-securing blanket, cools the grease and surrounding surfaces, and does so without producing toxic byproducts, making it the ideal extinguisher for commercial kitchens, food courts, cafeterias and more. The agent is specifically designed for use on fires that involve combustible cooking vegetable or animal fats in commercial cooking equipment.