Camp Chef Grease & Oil Hardener is designed to transform used cooking oil into solid waste. This makes for a safer and easier way to dispose of used cooking oil. Once cooled, the solid waste oil can be thrown away in a trash can with little to no mess. Not only is this easier to handle, compared to hot oil, it's also a better way to dispose of the waste instead of pouring it down your drains and causing drainage issues. Love your fried foods without the mess!