How to Get Rid of Mice in the Garage -Fast, Safe & Guaranteed!

You’ve seen that tiny footprint in the dust. Or smelled that sharp, musky smell near the back wall. You’re not imagining it — mice are living in your garage, and they’re probably breeding fast.

It’s not just gross. It’s dangerous. These little pests chew wires, spread diseases, and ruin your tools. And yes — they can get into your house if you don’t act now.

Let’s talk real talk. No fluff. Just straight-up ways to get rid of mice in the garage — the way we do it at Major Pest Control Calgary.

Why Do Mice Love Your Garage So Much?

Think about it from a mouse’s perspective. Your garage offers everything they need:

• Perfect hiding spots behind boxes, under shelving, and in dark corners.
• Easy food access from pet food bags, birdseed, or that forgotten bag of grass seed.
• Warm shelter from Calgary’s brutal winters.
• Leftover crumbs from snacks? That’s dinner.
• The door cracks? A mouse sees it as a doorway to paradise.
• Plus, most garages connect directly to your house. It’s like having VIP access to the main event.

The worst part? One female mouse can have up to 10 litters per year. That’s potentially 60+ baby mice. What starts as a small problem becomes a full-blown invasion faster than you can say “cheese.”

Step-by-Step: How to Get Rid of Mice in the Garage (Without Losing Your Mind)

Here’s what actually works — tested by us, used by hundreds of Calgarians.

Step 1: Find and Seal Their Secret Entrances

Mice are escape artists. They can squeeze through gaps smaller than a dime – seriously!

Start your inspection here:

• Around garage doors (especially the bottom seal)
• Where utility lines enter the building
• Cracks in the foundation or walls
• Gaps around windows
• Openings where pipes or cables pass through

Seal these spots with:

• Steel wool (mice hate chewing through it)
• Expanding foam for larger gaps
• Metal mesh for ventilation areas
• Weather stripping around doors

I once had a client who couldn’t figure out how mice kept getting in. Turns out, there was a tiny gap where the garage door track met the wall. One quick foam fix, and the problem disappeared.

Use a flashlight. Shine it into dark corners. If you see tiny gaps, that’s your problem spot.

Step 2: Cut Off Their Food Supply

This is huge. Remove the welcome mat by eliminating food sources.

Store these items in sealed containers:

• Pet food and treats
• Birdseed and grass seed
• Fertilizers (some contain organic materials)
• Snacks you keep in the garage fridge

Clean up regularly:

• Sweep up crumbs and spills immediately
• Keep garbage in tight-fitting containers
• Don’t leave pet bowls out overnight

Pro tip: Use metal or thick plastic containers. Mice can chew through cardboard and thin plastic like it’s tissue paper.

Step 3: How to Get Rid of Mice in the Garage Using Traps

Now for the main event – actually catching these little troublemakers.

Best Trap Types:

Snap traps are still the gold standard. They’re quick, humane, and effective. Place them along walls where mice naturally travel.

Live traps work if you prefer catch-and-release. Just remember to relocate mice at least 2 miles away, or they’ll find their way back.

Skip these:

• Ultrasonic devices (inconsistent).
• Peppermint oil-only plans (smell fades; mice adapt).
• Glue boards (not humane and can catch non-targets).

Smart Trap Placement:

• Along walls – Mice rarely run across open spaces.
• Near evidence – droppings, gnaw marks, or nesting materials.
• Multiple locations – don’t put all your traps in one spot.
• Check daily – reset or relocate traps that aren’t working.

Best Bait Options:

Forget the cheese stereotype. Try these instead:

• Peanut butter (sticky and aromatic).
• Chocolate or candy.
• Dried fruit.
• Bacon bits.

Step 4: Make Your Garage Less Mouse-Friendly

Declutter ruthlessly. Mice love hiding in piles of stuff. The more organized your garage is, the fewer hiding spots there are.

Elevate storage. Keep boxes and bags at least 6 inches off the floor. Use metal shelving when possible.

Control moisture. Fix leaky pipes, improve ventilation, and use a dehumidifier if needed. Mice need water just like any other animal.

Regular cleaning removes scent trails that attract more mice. A monthly deep clean works wonders.

Natural Deterrents That Actually Work

Some folks swear by natural repellents. Here’s what might help:

Peppermint oil – Soak cotton balls and place them near suspected entry points. Refresh weekly.

Ammonia – The smell mimics predator urine. Use small containers in corners (keep away from pets and kids).

Ultrasonic devices – Get mixed reviews. Some people love them, others see no difference.

Cats – They are nature’s mouse control system. Even the scent of a cat can deter mice.

Is Your Car at Risk? (Yes!)

This is the scary part.

A garage is often where we keep our cars. Modern cars have wiring that is sometimes coated with a soy-based plastic. To a mouse, your car engine looks like a warm bedroom with tasty wiring snacks.

I have seen repair bills over $2,000 because a mouse chewed a car’s wiring harness.

To protect your car:

• Don’t leave food wrappers in the car.
• Pop the hood occasionally to check for nests.
• If you park a classic car for the winter, block the tailpipe with steel wool (just remember to take it out in spring!).

When to Call Calgary Pest Control Professionals

Sometimes DIY just isn’t enough. Call the pros if:

• You’re finding dozens of droppings daily.
• Traps aren’t reducing the population after 2 weeks.
• You hear mice in your walls or house.
• You have health concerns (allergies, immune issues).
• The problem keeps coming back.

Professional exterminators have access to better tools and techniques. At Major Pest Control Calgary, we guarantee our work and use safe, effective methods that protect your family and pets.

We handle the dirty work so you don’t have to.

Quick Checklist (Print This)

• Find signs: droppings, gnawing, nests.
• Store food in sealed bins.
• Seal gaps with steel wool, caulk, and metal.
• Add door sweep and weatherstripping.
• Set multiple snap traps in stations.
• Clean safely with disinfectant.
• Re-check seals each season.

What NOT to Do

Don’t use poison in garages. It’s dangerous for pets, kids, and other animals. Plus, mice often die in walls where you can’t reach them.

Don’t ignore small problems. That one mouse you saw? There is more you haven’t seen yet.

Don’t give up too quickly. Mouse control takes persistence. Stick with your plan for at least a month.

Frequently Asked Questions

How long does it take to get rid of mice in a garage?

With the right approach, you should see results within 1-2 weeks. Complete elimination usually takes 3-4 weeks of consistent effort.

Will mice leave on their own if I remove food sources?

Unfortunately, no. Mice are territorial and will look for other food sources. You need to remove them and seal the entry points actively.

Is it safe to use mouse poison in my garage?

We don’t recommend it. Poison poses risks to pets, children, and wildlife. Snap traps are safer and more effective.

How many traps should I use in my garage?

Start with 6-8 traps for an average two-car garage. Place them 8-10 feet apart along walls and near evidence of mouse activity.

Can mice climb walls and get into my house from the garage?

Yes! Mice are excellent climbers. If your garage connects to your house, seal any gaps around doors, pipes, or electrical connections.

Your Next Steps

Getting rid of mice in your garage isn’t fun, but it’s totally doable. Start with sealing entry points and removing food sources. Set up traps strategically and be patient.

Remember, the key is being thorough and persistent. Half-measures just give mice time to multiply and spread.

If the problem feels overwhelming or keeps coming back, don’t hesitate to call in the experts. Sometimes, the peace of mind is worth every penny.

Your garage should be a place for your car and tools – not a mouse playground. Take action now, and you’ll have your space back before you know it.

Need professional help with stubborn mice in Calgary? Major Pest Control offers fast, safe, and guaranteed solutions. Contact us today for your free inspection.