These opium scented tea light candles are loaded with fragrance. We pour these candles by hand here in the U.S.A. They are great to use when you only want to burn a candle for a short amount of time. Each one will last for about 4 hours. You can spread these little tea lights all around a room to create a calm relaxing atmosphere. Tea lights are made in metal cups so they should always be burned on a heat resistant surface or in a holder because the bottom will get very hot when the wax is nearly gone.