You probably don't clean the inside of your microwave as much as you should, leaving you to attack the suspicious food and beverage stains only when absolutely necessary. This simple little accessory doesn't use any chemicals. All you need to do is fill the body with water, vinegar, and lemon juice, then microwave it on the High setting for less than 10 minutes. The steam from the solution breaks down tough, caked-on food so you can easily wipe it down by hand afterwards.
Topist Angry Mama Microwave Cleaner, $3.99, available at Amazon