There are loads of ways to reuse our candle jars once you have burned them to the bottom. We find that the best method for removing wax is to place the jar on newspaper and pour hot (even boiling) water in to the jar. Let it sit for 15 minutes or so. Begin removing the larger clumps of wax from the water. Line a strainer with a paper towel and pour the water from the jar. The paper towel will keep the wax from going down the drain. Wipe the jar clean and then wash with warm, soapy water or run through the dishwasher.