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19 Things You Should Never Microwave

By,
Gourmandize
Sponges 7/19

© iStock / Getty Images Plus / kittijaroon

Sponges

Sponges are probably the dirtiest items in your kitchen, and it's important to change them often. Some people also try to disinfect them by heating them up in the microwave. However, this method will not kill all the bacteria and may even cause the strongest, most resistant bacteria to propagate.