These large buckets filled with wax will burn for approximately 20 hours if used properly. In order to maximize the burn time, light the candle until a layer of liquid covers the entire candle (usually 3-4 hours). This allows the oil to heat and burn slow and clean. Do this each time you use the candle.
Please note: If left to burn for only a short period of time, then you will create a small tunnel in the middle of the candle which will waste all the surrounding wax.
For wide open space, place one container every 2 meters apart surrounding the area you are seated in.