How do you do this: how to clean a container that held melted wax

OPTIONS:
- Heat the measuring cup so that all the wax inside is liquid. Then wipe out measuring cup with a paper towel. Repeat if necessary to get all of the wax out.
- Heat the measuring cup so that all the wax inside is liquid and rehardened. Then wipe out measuring cup with a paper towel. Repeat if necessary to get all of the wax out.
Heat the measuring cup so that all the wax inside is liquid. Then wipe out measuring cup with a paper towel. Repeat if necessary to get all of the wax out.