Sale under lock and key, only with consultation, strongest product against stubborn burnt-in crusts in cooking chambers and on cookware made of enamel, chrome steel, glass, porcelain or ceramics, after the reaction time burnt-in crusts can simply be washed off with warm water, white gel is easily visible and adheres well to vertical surfaces, does not dry out even overnight, clean spreading with crumbs.burnt-in crusts can be easily washed off with warm water, white gel is clearly visible and adheres to vertical surfaces, extra long duration of action, does not dry overnight, clean application with Krust-ex nylon brush (included in delivery) guarantees safe application.