How to Mouse-Proof Your Home Before Winter

As temperatures drop, mice begin looking for warm places to shelter—and your home is the perfect target. Once inside, they can cause serious damage, contaminate food, and even spread disease. Fortunately, there are simple steps you can take to mouse-proof your home before winter arrives.

Here’s everything you need to know to stay rodent-free this cold season.

Why Mice Invade Homes in Winter

Mice don’t hibernate, but they do seek warmth, food, and shelter during the colder months. Lofts, basements, wall cavities, and underfloor areas offer ideal hiding spots.

Winter infestations often go unnoticed until they become severe. Prevention is key, and early preparation can stop mice from ever entering.

Signs of Mice in the Home

Even if you haven’t seen a mouse, look for these warning signs:

• Small black droppings, often found in cupboards or under sinks

• Scratching or scurrying sounds at night, especially in lofts or walls

• Gnawed food packaging, wires, or skirting boards

• Nests made from shredded paper, fabric, or insulation

• Musky odours in enclosed spaces like airing cupboards or basements

How to Mouse-Proof Your Home

1. Block Entry Points

Mice can squeeze through gaps as small as a 5p coin. Inspect your home carefully and seal any potential entry points:

• Use steel wool and sealant to block small cracks and gaps around pipes

• Install bristle strips at the bottom of exterior doors

• Check for broken air bricks or loose roof tiles

• Cover vents with fine mesh

Insert internal link to your rodent control service page (e.g. anchor text: “expert mouse-proofing services”)

2. Keep Food Secure

• Store dry food (including pet food and bird seed) in airtight containers

• Clean up crumbs and spills promptly, especially in the kitchen

• Don’t leave food or dirty dishes out overnight

3. Maintain Cleanliness

• Vacuum regularly behind appliances and furniture

• Keep bins tightly sealed indoors and outdoors

• Remove clutter in lofts, basements, and garages—mice love undisturbed storage

4. Protect Lofts and Basements

• Check insulation for signs of nesting

• Don’t store soft furnishings or cardboard boxes directly on floors

• Use plastic storage containers with secure lids

5. Use Natural Deterrents

While not foolproof, some scents can discourage mice:

• Peppermint oil-soaked cotton balls placed in entry points or cupboards

• Used kitty litter (in sealed containers) can signal predator presence

• Strong-smelling dryer sheets or cloves may also help

6. Set Traps as a Preventative Measure

Place humane or snap traps near known entry areas, especially in attics and along skirting boards. Avoid poison unless recommended by professionals—it can cause secondary risks and lingering odours.

When to Call a Professional

If you spot signs of a winter mouse infestation despite your efforts, it’s time to call in expert help. At GEM Services, we offer:

• Thorough home inspections to identify mouse activity

• Safe and humane removal methods

• Long-term exclusion solutions tailored to your home

Conclusion

Prevention is the best defence when it comes to winter mice. By mouse-proofing your home before the cold weather sets in, you’ll protect your property, your health, and your peace of mind. For professional advice or assistance, contact GEM Services—we’re here to help you keep unwanted visitors out this winter.