How to Keep Mice Out of Camper (5 Best Ways)


How to Keep Mice Out of Camper? Avoid a mouse problem in the first place! Here’s how to keep mice out of your camper or RV for good…

Mice may be small and cute, but they can cause big damage and an ugly mess.

Jennifer and I have heard horror stories through the years of how mice chewed through wires, insulation, and walls. Not to mention the nests they build that can clog vents and wreak havoc on your appliances and engine.

Even a dead mouse can cause a stink-up! Anyone whose returned to their RV after storing it for winter months only to be confronted with a terrible smell knows what I’m talking about.

So, whether you have a rodent problem or want to avoid one in the first place, here are some tried and true tips to keep them away from your RV.

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5 Preventative Measures to Keep Mice Out of Camper

The best way to prevent a mouse infestation is to keep them from getting into your RV at all. That means blocking off any potential entry points a mouse might use to infiltrate your rig.

There are several methods to do this. Chances are you’ll need to use more than one depending on the type of holes and entry points you’re dealing with.

How to Keep Mice Out of Camper (5 Best Ways)

1. Know How Mice Get In

You’ll see in the next section that the first step to preventing mice from getting into your RV is to search for entry points. But that means you need to know what to look for!

When searching, remember that mice have collapsible rib cages. Why is that important? Because that means if their head can fit into a hole, so can the rest of their body.

A good rule of thumb: if a pencil can fit, a mouse can fit.

So, when looking for potential entry points, you have to look for even the smallest holes and cracks that a flexible mouse can take advantage of.

2. Scour the Exterior of Your RV for Possible Entry Points

Now that you know what to look for, the first step is to scour the exterior of your RV for any small cracks or small openings.

I recommend taking a flashlight and brightly colored tape with you so you can find and mark every possible entry point. Then you can determine what materials you need to cover or fill the openings.

Since mice most often enter your RV from the ground, you’ll need to crawl under your RV to search there as well. Or employ someone else to do the job… even if that someone is a grandkid. (By the way, I say “most often” because I’ve heard of mice dropping down from tree branches to RVs).

If using jacks or jack stands to search under your RV, follow every safety measure and use backup safety measures so the RV can’t crush you! Unlike mice, you don’t have a collapsible rib cage!

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3. Seal All Holes and Cracks

The easiest way to seal off openings is to use spray foam, RV sealant or caulk, or steel wool. Or a combination of the three. You simply fill or cover the small holes with these materials to make sure mice can’t get in.

It’s a good idea to carry a rag with you and wear gloves since these materials can get messy (or scratchy in the case of steel wool). The last thing you want to do is make a mess of yourself and your RV when you’re trying to improve it.

Note that steel wool is a good choice if you want to remove it easily later on. For instance, you might want to use it openings while your RV is in storage that you’ll then remove before your next camping trip. Just be sure to mark these areas with brightly colored tape so you remember to remove the steel wool.

As an added bonus, ultra-fine steel wool is also great for cleaning, polishing, and buffing. You can use it to clean your RV’s windshield and much more.

How to Keep Mice Out of Camper (5 Best Ways)

4. Use Mouse Deterrents

Another effective way to keep mice away from your RV is to make it unattractive to them. You might wonder what in the world can deter creatures that revel in garbage, but there are quite a few options.

Granted, there is debate on how effective some of these are, but there’s not always a perfect tried and true method. Individual mice have their own preferences (and detractions), I suppose. But the following are supposed to help deter the majority of these little critters

Here are some mouse repellents and deterrents some people swear by:

  • Soak cotton balls in peppermint oil
  • Peppermint oil spray (apparently, mice don’t like peppermint!)
  • Dryer sheets (fabric softener sheets)
  • Mothballs
  • Fresh Cab Rodent Repellent

There’s a long-standing old wives tale that bars of Irish Spring soap will deter mice, but it seems that myth has been busted. However, I know several RVers who still swear by it. I’d be curious to hear from more RVers about this. If you’ve tried using Irish Spring soap as a mouse deterrent, please share your results in the comments below!

Note that any deterrent that uses strong smells or essential oils will lose effectiveness over time. You’ll need to replace these fragranced repellents on a regular basis.

5. “Burn” All Bridges

Mice can jump quite high (13 inches!), but they prefer to climb. So, you need to make sure there aren’t any “bridges” that give easy access from the ground to your RV. This includes any tubes hanging down… and your tires.

While you can keep any tubes from hanging down, what in the world are you supposed to do about your tires?!

Thankfully, one of our podcast listeners, named Bob, shared a valuable tip with us. You can click that link to listen to him explain it in detail. In short, you wrap sheet metal around your tires. Mice can’t climb up the slipper surface.

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Sometimes you have to say goodbye and store your RV away for a season. This involves more than just storing it away. We chat with a storage expert from the National Indoor RV Storage Center and talk proper indoor/outdoor RV storage tips and techniques.

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