COOL mother can only be used in the refrigerator, others are suitable for microwave ovens, please do not buy it wrong ANGRY HOT MAMA FOR MICROWAVE: Hot steam comes out of Angry Mama's head to soften and release microwave dirt and stains for fast and easy cleaning. Chilly MAMA KEEPS YOUR FRIDGE FRESH: Just fill Cool Mama with baking soda so that let her do the work. Baking soda helps keep your fridge smelling fresh for months; eliminates odors so foods taste fresher longer. EASY TO USE: Just add vinegar and water, then microwave for 7 minutes...as Mama's head lets off hot steam to dissolves the crud from your microwave. SAFE: Made with Heat- Resistant Materials. Top Rack Dishwasher Safe. BEST GIFT: Cute, Clever Design, packaged with gift box will make it a Great Gift for mother, sister, family, home, kitchen, office, Christmas Stocking Stuffer and Any Occasion. This kitchen gadget gift making cleanup in your microwave and deodorizing your refrigerator a breeze Package includes: 1 PCS "mom"