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Can Mice Chew Through Drywall? How to Prevent It?

Collage of mices chewing solid things inside the house.

Mice chew through drywall, insulation, wood, and other building materials. This creates an entry point for other mice to visit and leave behind their droppings.

Mice are drawn to home for three reasons: houses are safe, warm, and stocked with food. When mice infest your home, they generally hide in the darkest passages like crawl spaces, air ducts, and wall spaces. Mice can slip through a coin-sized hole and climb the wall, too.  

Read on to find out how you can keep mice out and more.

How Can I Remove Mice on My Walls?

A mice eating up an electric cable.

It’s a nasty experience to have mice in your home. The situation can be more unpleasant when they’ve made themselves a home on your walls!

Luckily, there are tried and proven tips on how to get rid of mice hiding in your walls without undertaking any construction project.

First, determine the exact spot of the nest and the path they used while searching for food. After that, use one of the following two methods to get rid of rodents:

1. Snap Traps

Snap traps are effective when placed strategically. I find this method the least cruel because it kills mice instantly, unlike other traps. If you choose a bait trap, use a bait that has a strong smell: bacon grease and peanut butter are the most effective. 

2. Rodent Poison 

Mousetraps aren’t effective to get rid of rodents in a heavily infested house. If you’re in such situation, it’s time to use rodent poison! Simply, follow these five simple steps:   

  • Drill a wider hole in your drywall 
  • Fill it with scented baits, and use transparent cellophane to cover the top of the box
  • Then secure the box against the wall 
  • After a day, check through the cellophane to find if the rats have taken the bait 
  • Repeat the process until there’re no rodents on your wall 

What Food Can I Use to Kill Mice Instantly?

Mashed potato flakes kill mice instantly. Sprinkle them wherever you see a mouse.  They’ll eat them, their stomach will swell, and it will instantly kill them.

What to Do With a Decaying Rat Carcass on the Walls?

A mouth of a a dead rodent.

It’s disgusting to have a decaying mouse carcass on your walls. Dead mice shouldn’t be left inside your walls. Otherwise, they might end up attracting other pests. Here is a simple procedure on how to remove a decaying rat carcass from your wall:

  • Take a drill, a flashlight, a pair of gloves, and a sealant to avoid contracting diseases transmitted by mice droppings 
  • Find out the exact location of the remains by drilling a coin-size hole where the nasty smell comes from   
  • Use a flashlight to find if there is a dead mouse. Drill another hole in the adjacent cavity if you don’t find anything.
  • If you find a dead rat, cut a larger hole (about 7 inches by 10 inches) to get rid of the decaying carcass 
  • Fill the partition with a sealant 

How Do Rodents Get Into Walls

Mice have small tender bodies, thus they can squeeze their way through coin-size openings. Also, they can climb walls, and access holes above the ground level, too.  

Here are common entry points for mice: 

  1. Chimney pipes and roof vents
  2. Poorly sealed doors and window frames
  3. Gaps in building materials 
  4. Weep vents
  5. Cracks in home foundation
  6. Deteriorating siding
  7. Wire entries and utility pipes 

Signs of Mice Infestation

Dishes and rodents in a kitchen sink.

There are numerous signs of rodents’ infestation besides catching them red-handed. Check out for any of these signs to help keep a small infestation from turning into a raging mice party. 

Chewing and Scratching

Mice are surprisingly noisy. At night when the house is quiet, you might hear some sounds like chewing, scurrying, and scratching coming from inside the ceiling or walls. You might hear chirps and squeaks, too. 

Whenever they move into your walls, they start making nests, and that means continuous chewing or scratching on insulation, wood, or other materials in there.  

If you hear such noise and aren’t sure, simply bang on the wall near the source. If it stops and waits for you to go away, that is a mouse! 

Vibrating or Drumming 

If you hear vibrating or drumming sounds in the walls, be rest assured you’ve got a talented white-footed rat.  

Visible Signs of Mice

I’m talking about smudge marks, mice droppings, and actual mice sightings. Be sure to look at the wall behind your kitchen cabinet.   

You might have utility rooms and closets where mice hide. Take a look at the glaring stash hiding behind your water heater, too.  

You’ll find slick smudge marks from where the mouse rubs up against the building materials if you look keenly. 

Also, check out your attic or trails in the insulation. A strong link exists between the mice in the attic and the mice in the walls. Normally, mice enter your home at a lower entry point and go up or down from there. 

Where Do Mice Hide in My House?

Sprinkles and Rodents eating junk foods.

Mostly, mice nest in these common areas:

  • Beneath or inside bathroom and kitchen cabinets
  • Behind or inside the cabinet and desk drawers 
  • Behind or under kitchen appliances
  • Inside or under upholstered furniture voids 
  • In secluded corners, cluttered rooms, attics, or garages

How Does a Mouse in the Wall Sound Like?

You can hear a mouse chewing on wood, insulation, and wires inside your walls. Also, you might hear scampering, scratching, and other noises as they move around inside your walls.  

What Scents Keep Mice Away?

Mice have a strong sense of smell. You might use this trait to repel mice by using scents they hate, like:

  • Cayenne pepper
  • Clove oil
  • Ammonia
  • Mint toothpaste 
  • Dryer sheets
  • Cinnamon 

Does It Take Long for a Mouse to Chew Through Drywall?

A mouse chews through a soft, thin wall made of plywood or drywall in less than three hours. A wooden wall can’t stop them for long. However, a thicker wall can take them a couple of days or even weeks. 

Keeping Mice Out: Final Thoughts                                               

A white mice surrounded by snap trap.

Having mice in your home can be an unpleasant experience. They can multiply rapidly if left unchecked. The cause of mice infestation might be a result of a couple of household issues like cracks around doors and windows. It can be an overgrown shrubbery that wears and tears on your sidings, too. 

Fortunately, the solutions are straightforward. When done in line with eliminating any food sources, they will certainly resolve your mouse issues.