Be Careful What You Microwave. According To Science, Here Are 12 Items That Are Unsafe To Microwave

Everyone knows that you shouldn’t put metal inside of a microwave. But there are other lesser known items that should be kept out too.

Here are some of those items:

1) Nothing

Running the microwave without anything inside of it can damage or even cause a fire since there is nothing to absorb the microwaves.

Source: BaBaMail

2) Paper Bags

Paper bags can release flammable toxins when put inside the microwave.

The Stout Sprout
Source: The Stout Sprout

3) Aluminum or Tin Foil

These are metallics and can catch fire.

YouTube Screenshot
Source: YouTube Screenshot

4) Take Out Containers

These are typically made of plastic which can melt and sometimes they have metallic components which can catch fire.

Flickr/Michael Dao
Source: Flickr/Michael Dao

5) Frozen Meat

It’s difficult to assess how well heat evenly distributes through meat depending on its thickness. Bacteria can grow and spread when heat isn’t properly distributed. So, its best to defrost meat in the refrigerator.

Rodale Wellness
Source: Rodale Wellness

6) Travel Mugs and Bottles

Unless your bottle or mug specifically says that it’s microwave safe, then you should keep it out of your microwave. The stainless steel can block heat from warming the contents of your mug and also damage your microwave. The plastic type can melt.

Source: Pinterest

7) Yogurt or Butter Containers

These containers will not be able to handle the high temperature of your microwave. They can also release chemicals into your food.

Huffington Post
Source: Huffington Post

8) Hot Peppers

If they don’t catch fire first, they can release chemicals that will burn your eyes when you open the microwave door.

The Active Times
Source: The Active Times

9) Styrofoam

Don’t do it. Not even for a few seconds. Not unless you want to unleash toxin into your food and clean up a melted mess in your microwave.

Gadget Review
Source: Gadget Review

10) Sauce or Dip Without a Cover

You’ll end up cleaning a splattered mess, so make sure you cover it even if it’s just with a paper towel.

My Recipes
Source: My Recipes

11) Grapes

Grapes will explode in your microwave and, believe it or not, can catch fire.

Organic Facts
Source: Organic Facts

12) Tupperware

Source: Tupperware

Again, these are plastic and can warp, melt, catch fire, or release toxins when put in the microwave if they aren’t microwave safe.

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Source: Clark

D.G. Sciortino
D.G. is a contributing writer in Shareably. She's based in Connecticut and can be reached at

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