How to Keep Mice Out of Storage Unit

Finding out that you have mice in your storage unit can be a real nuisance. Not only is it an immediate sign of unwanted guests, but it’s also damaging for the items stored there.

So, how do you keep mice out of your storage unit? With some simple preventative measures and practical strategies to deal with existing problems, you can quickly ensure that these unwelcome intruders stay away from what’s important to you – the contents of your storage unit!

How to Keep Mice Out of Storage Unit

In this blog post, we’ll cover everything ranging from identifying mouse infestation signs to coming up with long-term solutions and more! Keep reading if you’re looking for ways how to keep mice out of storage unit.

What Will You Need?

To keep mice away from your storage unit, you’ll need a few easy items to obtain. These include:

  • Sticky traps
  • Steel wool
  • Mothballs
  • Mouse repellents
  • Caulk or steel wool to seal off any openings or holes in the unit.

Once you have all the necessary items, begin by inspecting your storage unit carefully.

8 Easy Steps on How to Keep Mice Out of Storage Unit

Step 1: Initial Inspection

Begin with a thorough inspection of your storage unit. Look for any signs of mice activity, such as droppings, gnaw marks, or nesting materials. Mice can squeeze through openings as small as a dime, so inspect the unit for any small holes or cracks. If you discover any, you must seal them to prevent the mice from gaining entry. Pay close attention to corners and hidden areas, as these are popular spots for mice to sneak in.

Identifying Any Small 
Openings or Cracks

Step 2: Seal off Openings

After identifying any small openings or cracks, the next step is to seal them off completely. Use caulk or steel wool for this purpose. Mice have difficulty chewing through steel wool, making it an effective deterrent. Caulk can fill in smaller gaps and prevent any future entry. When sealing, ensure you cover your storage unit’s interior and exterior surfaces for a comprehensive solution. This step is crucial in keeping mice out of your storage unit.

Step 3: Set Traps

Once the storage unit has been sealed off from potential entry points, it’s time to set traps for any mice that may already be inside. Sticky traps are an effective method for catching these small intruders. The scent of the bait in the trap’s center lures the mice, and once they step onto it, they get stuck and can’t escape. Place these traps strategically around the unit, particularly near the walls and corners where mice often travel. Remember to check the traps regularly, replacing them as needed.

Sticky Traps Are an Effective 
Method for Catching

Step 4: Use Repellents

Besides traps, using mouse repellents can be a great way to deter these pests. Several types are available in the market, including ultrasonic repellents, which produce a high-frequency sound that mice find irritating. Another common type of repellent is mothballs. However, remember to use them sparingly and carefully, as they can be hazardous if ingested or inhaled. Place these repellents strategically around your storage unit to keep mice at bay. Remember, the goal isn’t just to drive the mice out of your storage unit but also to make it unattractive for future infestations.

Step 5: Maintain Cleanliness

Maintaining cleanliness in and around your storage unit is another important step in keeping mice away. Mice are attracted to places where they can find food and nesting materials. Avoid storing food items in your unit, and always immediately clean up any spillages or crumbs. Also, routinely clear the area around your storage unit of debris or clutter, as these can provide perfect hiding places for mice. Remember, a clean and tidy environment is less inviting to these pests, significantly aiding your efforts to keep mice out of your storage unit.

Step 6: Use Storage Bins

In addition to keeping your storage unit clean, consider using durable plastic storage bins for storing your items. Mice have a hard time gnawing through these sturdy containers, and they can help to protect your belongings from potential damage. Use bins with tightly fitting lids to prevent mice from accessing the contents. Using storage bins instead of cardboard boxes provides an extra layer of protection against mice and helps keep your items organized and easy to locate. This strategy is a significant step towards ensuring your storage unit remains mouse-free.

keeping your storage unit clean

Step 7: Regular Inspections

Continually monitoring your storage unit is essential for a mouse-free space. Conduct regular inspections, looking for signs of new infestation or breaches in your defenses. This includes checking for fresh droppings, signs of gnawing, or disturbed items. Regular checks will help you to catch any new mouse activity early before it becomes a major problem, and it allows you to assess the effectiveness of your existing prevention measures. If you notice renewed activity, don’t hesitate to reinforce your measures or even bring in professional pest control services. Regular inspections are pivotal in maintaining a mouse-free storage unit.

Step 8: Avoid Storing Food

Storing food in your storage unit can attract mice and other pests. Even non-perishable items can serve as a food source for mice. If it’s necessary to store food items, ensure they are in airtight, heavy-duty containers that mice cannot chew through. Avoid using cardboard or other easily chewable materials for storing food. Try to avoid storing food in your storage unit altogether. This is a simple yet effective step in ensuring your storage unit remains mice-free.

Following these eight simple steps, you can learn how to keep mice out of your storage unit and ensure it remain mouse-free.

5 Additional Tips and Tricks

  1. Regular Inspection: Check your storage unit for any signs of mice activity. Look for droppings, gnawed materials, or nesting materials. Early detection can help prevent major infestations.
  2. Food Storage: Never store food in the unit, as it can attract mice. If you need to store kitchen appliances, ensure they are thoroughly cleaned and food residue-free.
  3. Seal Cracks and Holes: Mice can squeeze through small openings. Regularly inspect your unit for any potential entry points and seal them immediately.
  4. Use Mouse Traps: Setting up mouse traps inside the unit can help catch and deter rodents. Check and reset these traps often.
  5. Professional Pest Control: If the infestation persists, consider hiring a professional pest control service. They have the expertise and tools to deal with mice issues effectively.

These five tips and tricks should help you keep mice out of your storage unit. Regular inspection and prevention are the keys to staying one step ahead of potential infestations.

Consider Hiring a Professional 
Pest Control

5 Things You Should Avoid

  1. Avoid Procrastination: Do not delay taking action if you spot signs of mice in your storage unit. Immediate intervention can prevent further damage and infestation.
  2. Avoid Clutter: Mice often hide in cluttered areas. Keeping your storage unit organized can make it less attractive to mice.
  3. Avoid Using Cardboard Boxes: Mice can easily chew through cardboard. Instead, use plastic containers with tight-fitting lids for storage.
  4. Avoid Storing Fabric Unprotected: Clothes and upholstery are attractive nesting materials for mice. Store these items in sealed, mouse-proof containers.
  5. Avoid Ignoring the Perimeter: Don’t just concentrate on the storage unit itself. Consider the surrounding area. Keep the area around your storage unit clean and clear of any food sources or hiding places for mice.

By avoiding these common mistakes, you can significantly reduce the chances of a mice infestation in your storage unit. Mice are attracted to clutter, warmth, and potential food sources. Therefore, maintaining a clean, well-organized, and food-free storage environment is crucial. Remember, it’s not enough to just focus on the interior of your unit; the surrounding perimeter also plays a pivotal role in mice prevention. By taking these precautions, you’ll be better equipped to keep your belongings safe from mice.

Will Plastic Containers Keep Mice Out?

Yes, plastic containers can effectively keep mice out of your stored items. Despite their ability to chew through various materials, mice find it difficult to gnaw through hard plastic. Plastic containers with secure, tight-fitting lids can thus serve as a reliable deterrent. However, remember that mice are persistent creatures and can still enter the storage unit if other preventive measures aren’t applied.

Therefore, while plastic containers protect your belongings, they should be used with other mice-prevention strategies outlined in this guide to maximize effectiveness.


How to keep mice out of storage unit can be a manageable task. You can take simple steps to minimize the presence of these pests and protect your valuables. Following the steps we have outlined, such as preventive measures like investing in strong, airtight containers for storage items and keeping all food items in sealed jars, will help protect your property from potential damage caused by rodents.

Additionally, ensuring your storage space is clean and free of stored objects on the floor where mice could nest will further discourage these pests from residence in your unit. Finally, if you’re ever dealing with a severe infestation or believe there is too much to handle by yourself, don’t hesitate to contact a pest control company for assistance.

With these tips and strategies in mind, you should be able to keep those pesky critters away!

Photo of author

Jennifer Branett

Leave a Comment