We love that you are repurposing your jar! There are several ways you can clean out your jar. If you have a wax warmer that is large enough for the jar to sit on it, this is a great way to actually get more use out of your candle! You can still enjoy the fragrance that is left in the 1/2" of remaining wax by placing it on top of the warmer and turning it on. This will heat up the leftover wax and melt it just like the wick would. To empty the jar, I like to pour it in a lined trash can that may have something absorbent in it like paper towels. Do not pour the wax down your drain! It will solidify and clog it. Another way is to fill your kitchen sink a couple of inches with hot water. You can sit your jar in the sink and it will soften the wax on the inside. Then reach in and scoop out the soft wax and discard in the trash. Wipe out the jar before washing it to remove as much wax as possible. We have not tried the last way but some people like to put their jar in the freezer. When wax gets cold it shrinks so it should pull away from the jar and be able to pop out! Discard wax in trash.