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What can mice chew through?

Mice really will chew through just about anything standing between them and food, warmth, or a nesting spot. Knowing what's at risk, and why, is the first step to keeping your home protected.

Why do mice chew through things?

A mouse's front teeth never stop growing. Left unchecked, their incisors would grow too long to use, which is why mice are constantly wearing them down on whatever's nearby. This instinct explains a lot about mice's behavior, from shredded cardboard boxes to chewed-up skirting boards.

What can a mouse chew through?

Mice have surprisingly strong jaws for their size, and their teeth can get through more than most homeowners expect. Here's what's commonly at risk:

  • Wood: Mice can chew through door frames, skirting boards, furniture, and even structural timber.
  • Plastic: They'll get into food containers, storage boxes, pipework, and plastic cladding.
  • Drywall: It's an easy target when mice are burrowing toward wall cavities.
  • Insulation: They chew through it both for access and to use as nesting material.
  • Soft metals: Thin aluminum sheeting or soft metal ducting can give way to persistent gnawing.
  • Electrical wiring: The plastic coating around wires is especially vulnerable.
  • Fabric and paper: These are often shredded for nesting rather than eaten.
  • Fiberglass screens: They're a common and surprisingly easy entry point.

Harder materials, like hardened steel mesh, hold up far better against determined gnawing, which is exactly why exclusion methods built around this kind of material matter so much for long-term protection.

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What's the real risk when mice chew through your home?

A chewed skirting board might seem like a cosmetic issue, but the risks are very real:

  • Fire hazards: Damaged wire coatings can expose live wiring.
  • Structural damage: Repeated gnawing on wood and insulation adds up over time.
  • Contamination: Mice can spread bacteria through droppings and urine as they move through your home.
  • Nesting buildup: Shredded insulation and fabric can pile up in wall cavities and attics, out of sight.

None of this tends to happen overnight, but it rarely stays small either. If you're noticing gnaw marks, it's worth getting ahead of it before it becomes a bigger repair bill. Our local technicians can help prevent damage before it becomes more costly.​​​​​

How we help stop mice from chewing through your home

Our approach starts with a thorough inspection to find out where mice are getting in and what they're targeting. From there, a treatment plan can focus on ridding your property of mice and sealing up entry points, so mice don't get the chance to start gnawing in the first place.

This is where Flexi Armour comes in. It's a moldable, knitted stainless steel mesh built to resist gnawing and corrosion, holding up where softer materials wouldn't. It's commonly used to seal entry points like:

  • Doors and garage seals
  • Foundation gaps and expansion joints
  • Vents and other hard-to-reach openings

Because it's flexible enough to fit irregular gaps and tough enough to resist chewing, Flexi Armour adds a durable barrier without relying on chemicals.​​​​​

Frequently asked questions

Yes, wood is one of the easiest materials for a mouse to chew through, including door frames, furniture, and skirting boards. Soft or weathered wood is especially vulnerable.

Mice can chew through most plastics, including food containers and plastic pipework, though they don't typically eat plastic for nutrition. They're usually chewing to access what's behind or inside it, or just to wear down their teeth.

Mice can gnaw through soft, thin metals like aluminum sheeting, but they struggle with harder, thicker metals. This is why gnaw-resistant materials like stainless steel mesh are so effective at blocking entry points.

Yes, fiberglass window screens offer little resistance to a determined mouse and are a common entry point into homes. If you're noticing damage to screens, it's worth checking nearby areas for other signs of activity.

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