Materials Rats Can & Can’t Chew Through | Complete Information

Are rats causing havoc in your house? 

You might wonder how rats cause so much trouble and dam to your house. 

Are you feeling irritated at the sight of gnawed-on wires and furniture? Don’t worry! 

There are certain materials rats can and can’t chew through.

Knowing this can help you know which materials you usee of to prevent damage by rats. 

materials rats can't chew

Why Are Rats Good At Gnawing?

Gnawing is a natural rodent behavior that keeps their teeth healthy. In their natural habitat, rats chew on twigs and barks, while in our homes, they have to chew on building materials.

Rats have very strong teeth and have the most powerful bite among all other rodents. Rats can chew through a surprisingly huge number of materials. 

The anatomy of a rat’s teeth explains why they are great at nibbling. What’s it?

Studies into the bones and muscles that make up the rat’s jaw have found that rats have muscles that are specially adapted for highly effective gnawing and chewing.

Another interesting fact about a rat’s teeth is that their incisors never stop growing! 

Rats must continuously chew through a variety of different materials to wear their teeth down.

Otherwise, their teeth would grow too long, making it impossible for them to eat or close their mouths, which would ultimately kill them. Amazing, right? 

No wonder these pesky little creatures keep on gnawing and chewing on materials! This is what makes it frustrating for homeowners who fail to keep these creatures from damaging their homes.

Materials Rats Can Chew Through

The sharp bite of rats can bring any mighty building material to tatters. These are some materials that rats love to chew through:

  • Wood
  • Cement
  • Plastic
  • Brick
  • Aluminum
  • Wires 
  • Lead
  • Cinder Blocks
  • Asbestos

Materials Rats Cannot Chew Through

Here’s some good news! Fortunately, rats cannot chew through some materials. At this, they haven’t beat us yet. So go ahead and grab these for a complete rat-proof home:

  • Solid Concrete: Many houses have solid concrete walls. But as long as there are no holes or cracks, rats won’t be able to enter through. 
  • Stone: Stone flooring and ceramic tile are great materials for flooring options. But not all ceramic tiles are equally strong. Some tiles might be weak enough for rats to chew through. So you have to be careful when choosing the right one. 
  • Hard Metal: Hard metals like steel and iron are impossible for rats to chew through. That’s why it’s recommended to use wire mesh and steel wool to seal gaps, and then they are filled with caulking. You can also use metal tiling for the flooring.  

How To Use Rat Resistant Materials To Prevent Rat Infestation?

1. Rat Proof Floors

Using weaker concrete materials like cinder blocks for the floor of your house can make it easy for rats to chew through.

Using solid concrete for the flooring is a wise decision since even the strong teeth of rats cannot get their way through it.

Even more, so if your house has a solid concrete foundation, then it’s very unlikely that rats will be able to get in through the floor. That’s great news, right?

Another option is to install stone flooring. This also can stop rats in there, as can some types of metal tiling.

2. Block Holes And Gaps With Rat Proof Materials

Now, this is very important. Whatever rat-proof material you use, if there are holes or cracks in the walls, roof, or floors of your house, then rats can easily get through into your house. 

Common entry points include the openings around pipes, electric wires, vents, and drain spouts, and the cracks and gaps around windows, doors, and screens. Make a thorough inspection of your house and seal all the possible entry points with rat-proof materials.

Block off all holes using wire mesh, steel wool, or caulk. A mixture of steel or copper wool and caulk is best for sealing holes, as the combined strength of these two materials makes it very difficult for rodents to gnaw through. 

Bonus Tips To Keep Rats Away 

Keep Your Surroundings Clean 

Rats love dirty, cluttered places, so they look for places with piled-up things like the attic or loft. 

  • Clean your house regularly to deny them their space and prevent the nesting of rats in your house. 
  • Make sure to use sealed garbage cans to store waste. 
  • Don’t leave food leftovers on countertops.
  • Clean up all spills, crumbs, and cooking utensils immediately, and don’t neglect the spaces behind appliances and in attics & walls.
materials rats can chew

Seek Pest Control As Soon As Possible

A rat infestation can cause many problems like diseases and infection. You must know when to call a professional exterminator. 

It’s better to seek professional help if you feel the rat trouble is getting bigger. An experienced professional might be able to assist you well. 


So having read this article, you might now know which materials rats can and cannot chew through.

So make use of the rat-proof materials to prevent rats from entering your homes. 

Get rid of rats by following these simple tricks to having a safe environment for yourself and your family!

I hope this article has given you solutions to rat problems. 

Photo of author


Daniel White
I'm Daniel White, and I live in Jacksonville, Florida. The warm and humid climate of Florida gives an ideal habitat for many different kinds of pests. So, if I had to live in Florida, I had to learn how to deal with these pests. Now, I have 7 years of experience in Pest Control.

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