Made of paraffin wax that creates no toxic fumes and lights even when it is wet. This is how amazing lighter cubes by Weber are. They act as fuel to light your barbeque quickly and efficiently. Weber lighter cubes work like a charm with Weber rapidfire chimney starter. It is a multipurpose lighter fuel that works even with a campfire. This is the perfect safe companion for your charcoal grill and it leaves no ash. You also don't have to surround yourself with lighter fuel fumes because Weber's cubes are odorless. All you'll smell is your amazing dinner cooking away.