Steps to clean the jars…

Hot water can also be used to remove wax. Put the candle on a surface protected with a towel or thick paper towel.

Use a butter knife or spoon to remove as much wax as possible.

Pour hot water into the container, leaving room at the top. The boiling water will melt the wax, which will float to the top.

Let the water cool, then remove the wax.

Strain the water to remove any small wax bits; however, be sure not to pour wax down the drain.

Scrape any remaining wax and clean with soap, water, and a paper towel.

For stubborn buildup, use an adhesive remover.