How to Keep Rodents Out of Your Garage in Castle Rock, WA This Winter

When winter hits Castle Rock’s not just the cold that you have to worry about—it’s the rodents looking for a warm, cozy spot to nest. Your garage is the perfect haven for mice and rats trying to escape the chill. Thankfully, with the right steps, you can keep these unwanted guests from turning your garage into their winter retreat.

1. Seal All Entry Points

Rodents can squeeze through cracks and holes the size of a pencil. Inspect your garage carefully for any potential openings, including:

• Gaps around doors

• Cracks in walls or windows

• Holes around utility pipes

• Gaps in the foundation

Use weather stripping for doors, and seal cracks with caulk or expanding foam. Don’t forget to check vents and make sure they have tight-fitting covers.

2. Keep It Clean and Clutter-Free

Rodents love clutter—it gives them plenty of places to hide and nest. The less mess, the less appealing your garage will be to them. Here’s what to do:

• Store items off the floor in sealed containers

• Keep garbage in tightly sealed bins

• Sweep and vacuum the garage regularly

If rodents can’t find easy food or shelter, they’ll be less likely to stick around.

3. Use Rodent Repellents

There are several natural repellents that can help keep rodents at bay without harsh chemicals:

• Peppermint oil: Rodents dislike the strong smell. Soak cotton balls in peppermint oil and place them around the garage.

• Ultrasonic repellents: These emit a high-frequency sound that rodents find irritating.

• Mothballs: While not the most pleasant option for humans, they can help deter rodents when placed in corners or entry points.

If you prefer to use more eco-friendly methods, peppermint oil and ultrasonic repellents are your best bet.

4. Trim Trees and Shrubs Around Your Garage

Rodents often use trees and shrubs as highways to your garage. Keep branches trimmed at least 6 feet away from the structure to prevent rodents from using them as access points.

Also, keep piles of leaves, mulch, or firewood away from the garage foundation. These are perfect hiding spots for critters looking for a place to nest.

5. Set Traps and Baits

If you’ve already spotted a rodent or two, setting traps is an effective way to catch them before they multiply. Consider:

• Snap traps: Quick and effective, these are one of the most humane ways to handle an infestation.

• Live traps: If you prefer a catch-and-release method, live traps allow you to safely relocate rodents.

• Bait stations: Rodent bait stations are also an option, but make sure they’re out of reach of pets or small children.

Once a rodent is caught, promptly dispose of it and reset the trap.

6. Inspect for Signs of Infestation

Regularly check your garage for signs of rodent activity, such as:

• Droppings (often in hidden or dark corners)

• Chewed wires or insulation

• Gnaw marks on wood, plastic, or food packaging

• Unpleasant musty or urine smells

Early detection means early action—helping you address a small problem before it becomes a larger infestation.

7. Call in the Professionals

If all else fails and the rodents just won’t leave, it may be time to call in a pest control expert. They can help assess your garage, seal any additional points of entry, and handle any larger infestations with effective, safe treatments.

Final Thoughts

Winter in Castle Rock. brings rodents looking for warmth, but with the right prevention steps, you can keep them out of your garage. From sealing entry points and keeping things clean, to using repellents and setting traps, there are plenty of ways to make your garage a no-go zone for mice and rats.

By taking action now, you can avoid the headaches of a rodent infestation later.