Last Updated on April 6, 2021

Twenty-four-hours a day doesn’t seem to be enough to get everything done, and we need to find innovative ways to save ourselves some time. That’s why microwaves were invented – they are fast, practical, and absolute lifesavers when it comes to food preparation. However, it’s important that you know which things are microwave safe and which things you should never, under any circumstances, put in the microwave. Here is a list of 10 things you shouldn’t put on your microwave oven.

1. Breast milk

If you can’t breastfeed without pumping and you store your breast milk in the fridge, you are going to want to heat it before feeding it to your baby, and you should never use the microwave for this purpose. The heat in the microwave is not evenly distributed, and as a result, some of the milk might be too hot, which may cause damage to your baby’s throat and mouth. You should always heat it on the stove or using hot tap water.

2. Plastic takeout containers

The vast majority of plastic takeout containers are single-use, which means they are not supposed to go in the microwave. If you want to keep them and use them to store stuff in the refrigerator, you can, but do not heat them – they will release harmless plastic particles that can put your health at risk. Always read the labels on plastic products and Styrofoam food containers to find out if they are microwave safe.

3. Aluminum Foil

The interior of a microwave is made of metal, which means this kitchen tool kind of works like a mirror, reflecting microwaves or radio waves if you prefer. These radio waves release the electromagnetic energy responsible for heating your food. If you place aluminum foil inside the microwave, the waves will reflect off of it, causing it to burn and ignite. This can be very dangerous, and it can cause extensive damage to your microwave.

4. Paper Bags

There are different types of paper bags, and not all of them can go in the microwave. To be microwave safe, a paper bag must be equipped with a specific material that consumes radio waves – which is the case of popcorn bags. The regular paper bags that you use to pack your sandwiches are different, they don’t have that material, and as a result, toxins might be released as you warm them up. The heat from the microwave can be so intense that the bag could actually burn and start a fire.

5. Travel Mugs

Travel mugs are usually made from steel or plastic, and these materials are not exactly what we would call microwave friendly. Steel is the type of material that can interfere with the radio waves, damaging your microwave. And as for plastic bottles, it depends – the ones that are microwave-safe will say so in the label.


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