There are a few things you can do to clean wax out of a wax warmer. The first is to use a cloth to dry the wax off. The second is to use a vacuum cleaner with the hose attachment to suck the wax up into the vacuum cleaner. The third is to use a bucket and pour water onto the cloth and then place the cloth over the top of the bucket. The fourth is to use a plunger and push and pull on the cloth until all of the wax has been sucked up into the plunger.