Scrub Mommy is a multifunctional cleaning sponge that changes structure depending on the water temperature and provides many different cleaning options. Rinse the sponge in cold water to use for tougher cleaning without scratching. (You can even use the sponge to scrub potatoes when it's hard.) With warm water, the sponge becomes soft and malleable and can be used for easier cleaning. Can be cleaned in a dishwasher.