Because candle wax becomes brittle when it is frozen, it can easily be removed from its container. To start, place the old candle container into your freezer for a couple of hours. Once it has frozen, use a knife to gently pry out the remaining wax. Put some warm water on a paper towel and wipe out any leftover debris. This is a good method for candles made using Parrafin wax or Beeswax.