How to Get Rid of Mice in Your Walls (If You Hear Scratching at Night)

Rodents, Reptiles & Bats
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:wrench: Quick Answer: How to Get Mice Out of Your Walls
Editor’s summary for readers who want a fast solution

If you hear scratching or movement in your walls at night, it usually means mice are traveling through wall cavities looking for food or nesting areas.

If you hear mice scratching inside your walls, this usually works:

  • Seal entry points (steel wool + caulk)
  • Set snap traps near wall entry holes
  • Avoid ultrasonic repellents (users report poor results)
  • Remove food sources immediately
  • Call a professional if scratching continues after 7–10 days

:hammer_and_wrench: Helpful Tool (Optional):

Some homeowners also use smart mechanical traps like the Thanos MK47 near suspected wall entry points. These traps allow you to monitor rodent activity and catch mice without needing to open the wall itself.

Below are real experiences from homeowners who’ve dealt with mice in their walls.

Many homeowners first notice the problem when they hear scratching sounds in the walls at night.

Mice often enter wall cavities through small gaps around pipes, vents, or foundations. Once inside, they travel along insulation and studs while searching for food sources inside the home.

The key to solving the issue is combining three steps: sealing entry points, removing food sources, and placing traps near suspected wall entry areas.

Hey everyone!

I’ve recently discovered that I have a bit of a mouse problem in my house. I keep hearing them scurrying around in the walls, and honestly, it’s freaking me out! I know I need to take action, but I’m not sure where to start.

Background:
I’ve done a bit of research, and it seems like there are a few approaches people take when dealing with mice. Some suggest traps, others talk about using repellents or even calling pest control. I’ve also seen advice about sealing up holes and cleaning up areas where food might be accessible.

Common question: Can mice live inside walls?

Yes. Mice frequently build nests inside wall cavities because they provide warmth, protection, and easy movement throughout the house. If scratching continues for several nights, it usually means a nest is nearby.

Discussion Points:

  1. What’s the most effective method you’ve used to get rid of mice in your walls?
  2. Are there any DIY tricks that actually work?
  3. How do you prevent future infestations?
  4. Should I just call a professional, or can I handle this myself?

Looking forward to hearing your thoughts! Thanks in advance.

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Great topic, @Eric! Mice can be really annoying. I’ve worked in pest control for over a decade, and I can tell you that sealing up entry points is crucial. Mice can fit through tiny holes!

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Absolutely agree, @PestControlPro123! I had a similar problem, and after sealing all the holes with steel wool and caulk, I didn’t hear them anymore. Just make sure to check under sinks and around pipes too!

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I’m a bit against using traps, especially if you have pets. Have you tried using peppermint oil as a repellent? It worked wonders for me — I just soaked some cotton balls and placed them in areas where I thought they were getting in.

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If you’re up for some DIY, consider using a combination of traps and repellent! I used peanut butter in snap traps and then added cotton balls soaked in peppermint oil nearby. Caught a few, then kept them away!

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Hey everyone! Has anyone ever had to call pest control? I’m wondering if it’s worth it. I’m nervous about the cost!

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It can be pricey, but if you’re overwhelmed or if it’s a big infestation, it might be the best route. They can also give you advice on prevention afterward.

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Thanks for the tip! I think I may consider it if I don’t see results soon.

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I’ve dealt with mice before, and I can tell you that cleaning is essential! Make sure to wipe down surfaces and put food away properly. It’s a great way to deter them.

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Before setting traps, try knocking on the walls where you hear them! The vibrations often drive mice out temporarily so you can spot their entry points. Worked like a charm in my old apartment!

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@WallWhisperer That’s clever! I combine this with peppermint spray - the scent deters them while the noise flushes them out. Just be ready to seal those holes fast!

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Important note for pet owners: Avoid glue traps! They’re cruel and pets can get stuck. Snap traps placed inside PVC tubes work great while keeping paws safe.

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@PetSafeSolutions Good point! I also use electronic traps - humane and reusable. A bit pricier but worth it for recurring problems in my city row house.

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If you suspect mice are living in your walls, act quickly to prevent a full infestation. Start by listening for scratching or scurrying sounds, especially at night. To drive them out, set traps near suspected entry points and use bait like peanut butter or chocolate. Ultrasonic repellents can also be used, though results may vary. Seal off all possible entry points—remember, mice can squeeze through holes as small as a dime. That means even tiny gaps around pipes, vents, windows, and doors should be filled with steel wool or caulk. Make sure your home’s windows and doors close tightly and have no cracks or gaps—poorly sealed frames are an open invitation for mice. Keeping your home clean, especially food storage areas, will also discourage them from sticking around.