Keep mice out of garage

How to Keep Mice Out of Your Garage Safely

Avatar of author Ismael Girard
Ismael Girard
min read

Mice do not just randomly decide to set up a base in a garage. There are specific reasons why mice are attracted to this space. They're small, agile, and nature has equipped them well to exploit little cracks and gaps in our homes.

They can chew through certain materials, making the number of potential entry points even larger. Plus, the garage can be a haven for these creatures. It’s often quiet, dark, and filled with hiding spaces like boxes and discarded items where they can easily nest.

The main attractant however, is access to food. These little guys aren't picky eaters. They’ll gladly munch on the grass seed in the corner, the dog food left in an open bag, or even non-edibles like cardboard! In the eyes of a mouse, a garage can often look like an all-you-can-eat buffet of opportunities.

In this article, we'll answer the following questions:

✔️ Why does your garage attracts mice?

✔️ What are signs of mice infestation in your garage?

✔️ What are the best strategies to keep mice out of your garage?

✔️ How to set up traps and baits in your garage?

✔️ How to prevent mice from getting in your garage?

Let's get it!

Understanding Mouse Infestations in Garages

person cleaning garage

The garage often becomes a solution for our storage needs. But the nimble, opportunistic nature of mice means we may unwittingly invite unwanted visitors along with our nicely stashed possessions.

Why Does Your Garage Attracts Mice?

Garages offer multiple attractive resources for mice. They are, quite literally, a wealth of information for these creatures with their diverse collection of food sources and materials ideal for nesting.

  • Whether it's pet food left open, boxes of grass seed, or an unprotected bag of bird seeds, garages often provide an abundance of food for them. Mice are not particularly fussy and will chew through plastic containers to access the food inside.
  • And even if there's no food, they might find plastic materials, cardboard, or soft fabric items attractive as nesting opportunities.
  • Aside from the abundance of resources, garages provide warmth during winters - an effective way to escape the Canadian cold.
  • Entry points around doors, windows, and small holes or cracks in the wall allow mice to easily enter our garage. Sealing these gaps is, hence, crucial in our first line of defense against a mouse infestation.

Signs of Mice Infestation in Your Garage

Detecting a mouse infestation early on can help prevent extensive damage to your property and potential health risks. Unsurprisingly, mice leave tell-tale signs around your garage if they've made it their home.

Look for small, pellet-like droppings that mice often leave behind, particularly around areas where food sources are stored. Increased signs of chewed materials and damage to stored items might suggest the constant presence of mice. Mice also create burrow-like nests with gathered materials - an indicator worth investigating.

Sometimes, we might catch a distinctive smell in our garage. That's possibly mouse urine, a distinct odor that tends to linger. Be aware, though, determining a mouse infestation by smell may not be the best or most efficient way as it might indicate a longstanding problem.

We shouldn't forget that mice can also wreak havoc on our car wires, causing significant damage. Regular checks to ensure everything is in order can go a long way in keeping mice out.

What Are The Best Strategies to Keep Mice Out of Your Garage?

To effectively keep mice at bay, a comprehensive approach encompassing closing off access points, organizational strategies and effective mouse repellents is crucial.

Sealing and Proofing Your Garage

Identifying Entry Points

Mice are exceptional climbers and can gain access through holes as small as a dime. Hence, conducting a thorough check around the garage, especially focusing on low-lying spots and corners, is key.

We need to pay attention to gaps around doors and windows, cracks in the walls, and any utility lines entering our garages.

Sealing Gaps and Cracks

Once we've identified the possible entryways, sealing those gaps and cracks becomes the next important step.

Engaging the use of materials like steel wool and caulk, which rodents cannot chew through, ensures the fortification of our defenses.

To further prevent a potential mouse infestation, installing door seals or using rodent-proof garage door bottom seal is a highly recommended preventive measure.

Organizational Measures to Deter Mice

Decluttering and Cleaning

A clutter-free garage is less inviting to mice as it eliminates potential nesting sites.

Regular cleaning, decluttering of items lying around and getting rid of anything not necessary, go a long way in making the space unattractive to these little rodents.

Since mice find differences in their environment disconcerting, frequent cleaning could be a useful deterrent.

Proper Storage Practices

Remember, efficient organization does not stop at decluttering only. Proper storage of food sources, such as pet food or bird seeds, is imperative. These items, especially if left out in the open, can easily attract mice.

We recommend using airtight and chew-proof containers, preferably made of metal or thick plastic for storage. Ensuring that we do not leave food items accessible helps keep our garage free of mice.

Natural Repellents and Deterrents

Using Essential Oils

A host of natural repellents can be employed to make the garage environment inhospitable for mice.

Products like peppermint oil have proven to be effective deterrents, as mice are put off by the strong scent.

Saturating cotton balls with this oil and placing them strategically around the garage, especially near identified potential entry points, can deter the tenants we'd rather not have.

Other Natural Deterrents

Some other proactive measures can also be taken to fend off these unwelcomed guests. These range from using ultrasonic pest repellents that emit frequencies not tolerated by rodents, to getting a cat—known natural predators of mice.

As this fight against rodent infestation is waged, it's pertinent to keep in mind that consistency is the key.

We need to be swift in managing any visible signs, remain vigilant to prevent easy access, maintain cleanliness, and opt for natural deterrents to ensure our garage remains a rodent-free zone.

How to Set Up Traps and Baits in Your Garage?

Perhaps the most familiar method to tackle a mouse infestation is the use of traps and baits. Let's explore choosing the right mouse trap for your garage and ensuring safe and effective use of baits.

Choosing the Right Traps

Spring Traps

Spring traps can be a highly effective way to control a mouse infestation. Do remember mice are shrewd little rodents and they easily learn to avoid traps.

So, if it's possible, we recommend switching trap locations and types from time to time. Spring traps, like the classic Victor Mouse Trap, are designed to kill instantly, reducing the likelihood of causing unnecessary suffering.

Sticky Traps

Sticky traps, also known as glue traps, contain an adhesive material to capture mice. A food source is often placed in the middle of the sticky surface, luring mice onto the trap.

However, they're somewhat controversial due to welfare concerns, as trapped mice may endure distress before eventual deaths. Seek alternatives if you're uncomfortable with the prolonged suffering sticky traps might cause.

Live Traps

If you're looking for ways to deal with your mouse problem that don't involve killing, live traps make a humanely appealing option.

These small boxes allow mice to enter but not leave. As the name suggests, live traps capture rodents whole, allowing for their relocation away from your home.

Safe and Effective Use of Baits

Selecting Appropriate Baits

Choosing the right bait can make significant difference in your rodent control efforts. A common misconception is that cheese is the best bait for mice - when actually, rodents tend to find foods like peanut butter or seeds more appealing.

Research has suggested that chocolate, bacon, oatmeal, prunes, and the like work well too.

Safety Precactions

While baiting rodents, it's important to keep safety top of mind. All baits should be kept out of reach from children and pets.

Secondly, be cautious with the amount and concentration of bait used - remember even dead mice can continue to infect if ingested by pets.

It might seem like a small detail, but ensure you're making these precautionary decisions, for it can prevent a slew of regrettable incidents later.

How to Prevent Mice From Getting in Your Garage?

Continuing our guide on defending garages against the mouse, let's talk about maintenance and routine checks. We need to ensure that we're not only fixing the problem but preventing future infestations, similarly to an RV mice prevention strategy. 

Regular Cleaning and Inspection

Implementing regular cleaning and inspections should be your first step towards efficient mouse control. Here's why:

  • Find Food Sources: Mice often search for food sources around our homes. Frequently checking and cleaning your garage ensures these creatures don't find an easy food source. Be meticulous about pet food, seeds, and other items that mice might find appealing. Conducting a thorough cleaning also helps us to spot signs like mouse droppings, a telling cue for mouse infestation.
  • Find Entry Points: Mice are able to exploit the smallest of structural flaws to gain entry to your garage. A thorough inspection can help identify potential entry points - be it holes around doors, cracks in the wall, or gaps in the garage door seal.
  • Assess Damage: Regular inspection helps identify damage caused by these little rodents. This includes damage to car wires (yes, they can chew through those too!), gaps and holes they've carved, and nests they may have built.

Storage Solutions to Prevent Infestations

Mice seek safe, secluded areas to nest. Often, areas cluttered with boxes, especially cardboard ones, provide just the right kind of environment for mice nesting.

  • Swap Cardboard for Plastic: Cardboard boxes offer an easy-to-chew material for mice, while also providing a potential food source for these pests. Swapping these boxes with plastic containers can significantly mitigate this problem.
  • Improve Storage: Mice do have their limitations. Raising the storage boxes off the floor can make it harder for them to reach nesting materials.
  • Seal Openings: Food and seed bags should always be properly sealed, stored away in airtight plastic containers if possible, to keep the smell contained and limit the accessibility to these rodents.

Understanding the behavior of pests like mice is the first step towards effective pest control. Keep this information close at hand as you work towards making your garage an inhospitable environment for mice. Do consider professional pest control services if an infestation seems resistant to home remedies.

However, remember our focus on prevention. Combating a pest infestation is easier and less time-consuming when it's centered on preventing mice from making your garage their home in the first place. A proactive stance today can spare you a reactive struggle tomorrow.

Choosing Professional Pest Control Solutions

After understanding the basics of mouse behavior and taking necessary preventive measures, it's time to delve deeper into the consideration of professional pest control solutions.

Even with the best of efforts, sometimes the task of keeping mice away from the garage might go beyond the homeowner's control.

Professionally licensed pest controllers are equipped with advanced tools, knowledge, and methods to manage a mouse infestation effectively. Here's what you can expect from their services:

  1. Initial Assessment: Pest controllers usually begin with an in-depth inspection to understand the severity of the infestation.
  2. Treatment Plan: Based on the assessment, they design a customized treatment plan. It often includes a combination of traps, baits, and other control measures.
  3. Implementation: Application of the treatment plan with the aim of getting rid of the mice.
  4. Follow-Up Visits: Regular follow-up visits to ensure the infestation has been effectively controlled.

Professional pest control services can be the most surefire way to resolve a mouse infestation.

These experts not only help eliminate the mice but can also provide personalized advice to prevent future infestations, especially regarding making the garage less attractive to these little rodents.


We've given you the knowledge you need to keep your garage mouse-free. Remember, it's the signs of infestation that call for immediate action. Don't wait until it's too late.

Professional help is crucial in this battle against mice. With their comprehensive services, they'll not only rid you of these pests but also help you maintain a mouse-free zone in the future.

So, let's make our garages less inviting to these unwanted guests and leave behind to mouse problems for good.

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Frequently asked questions

Are mice attracted to all types of food in the garage?

Yes, mice are not picky eaters and are attracted to a wide range of food items found in garages, from pet food and grass seed to non-edibles like cardboard.

Can mice cause damage to vehicles parked in garages?

Mice can cause significant damage to car wires and other components of vehicles parked in garages, leading to costly repairs.

How small of an opening can a mouse use to enter a garage?

Mice can use openings as small as a dime to gain access to garages, emphasizing the need for thorough sealing of gaps and cracks.