How to Actually Keep Mice Out of Your Camper (No Irish Spring Soap!)

Once you see that first mouse poo in your camper, it’s hard to think of much else besides the fastest way to get rid of the problem… especially when that bar of Irish Spring soap you dutifully put everywhere is covered with teeth marks!

Whether you’re prepping your RV in spring or the cool temperatures of fall are pushing the mice in, having mice in your camper can be infuriating! Attempting to block all the entrances of your camper can be hard, and fully getting rid of them can feel even harder.

Don’t worry though, I’ve found a ton of options that are NOT Irish Spring (just do a search on a Facebook forum or google… EVERYONE mentions it!).

Here we go!

Top options for getting rid of mice in your RV

A combination of preventative and active measures is best, but doing at least one of these should help a lot! If you’re doing this in prep for winter, then be sure to check out my winter RVing tips here!

  • Plug in electronic repellant
  • Grandpa Gus spray deterrent
  • Copper Mesh TIGTHLY packed at pipe/wiring entrances
  • Mouse Blocker Foam
  • Coyote and fox pee
  • Mess free contained traps
  • Collars around power + water/dump hookups
  • Greased entrances
mice just eat irish spring soap

Electronic repellants (Plug in for indoors, solar powered for outdoors!)

The easiest option as there are no sprays or work involved, these work by emitting a certain frequency that drives mice and other pests crazy. It seemed in less than a week, most mice clear out of the area and stay out.

This 6 Pack of Ultrasonic Pest Repellers should be more than enough to cover the space you need – make sure to do one per space as the frequencies cannot penetrate the walls!

This solar powered repeller is motion activated and is a great option for extra outdoor protection at your seasonal campsite or storage spot!

plug in electronic repellant to keep mice out of camper

Grandpa Gus Spray Deterrents (peppermint and cinnamon essential oils)

This option is WONDERFUL because it leaves no chemical smell (only uses essential oils!) and is pet/kid safe. Besides RV’s, I’ve seen people use Grandpa Gus products in places like their barns and dog houses too… all without any fuss from the other animals!

See also
11 Best Class C RVs Under 25 Feet | Video Tours and Floor Plans

Use the Grandpa Gus Spray on the entrances/exits of your camper. Make sure to spray a little extra around any problem areas you’re aware of (such as where wires and pipes come in). For extra potency, soak some cotton balls with the spray and put them in something with restricted airflow (such as these tins J.H. used) so that the smell stays longer!

grandpa gus spray with peppermint and cinnamon essential oils to repel mice

Copper Mesh – won’t rust like steel wool

Steel Wool is a popular, budget friendly option, but I wanted to focus on copper mesh since it doesn’t rust and, because of the way it’s woven, gets stuck in the mice teeth so they can’t chew through it near as easy as steel.

Plugging every hole under your camper with copper mesh is a great way to prep for long term storage over winter – it’s very durable and won’t run out of scent. The most thorough way to use this solution is to go under your camper with a flashlight and plug every hole with a mesh spray/tape combo.

When looking at the underbelly, make sure to check near wiring, hoses, pipes, and tanks as these are common places to have small holes (and mice can squeeze through something the size of a dime!)

I love that this copper mesh set includes a packing tool!

use copper mesh instead of steel wool to keep mice out of camper wont rust

Pest specific spray foam mice won’t chew through…. very often

Spray foam is an easy way to fill in all the little gaps that are too annoying to do with the mesh, especially when there is a mouse specific one! There seem to be mixed reviews about the effectiveness, so I’d recommend pairing it with the mesh if possible (stuffing the holes with mesh then spraying a layer of foam as a sealant).

See also
13 Best Off Road Travel Trailers and Campers with Bathrooms | 2022

Here is Tomcats foam mice barrier spray that has pretty decent reviews – it’s trimmable and paintable, so it’s easy to make it look nice and seal tight.


3D Printed Custom Utility Hatches

Not everyone has access to a 3D printer, but there are plans uploaded such as these that you can get printed through a variety of services.

CreativeRVSolutions 3D prints these pretty sweet custom RV Hatch covers that look like they would work well (+ there’s a ton of positive reviews to support that!) if you like the idea!

3d printed utility hatches
via CreativeRVSolutions customer review

Fox or Coyote Urine (Yes, you can buy this!)

It sounds gross, but having mouse poop in your camper is usually gross enough to motivate you to try anything! This system works just as you think – the mice smell a predator nearby and don’t tend to stick around.

With a spray system such as PredatorPee, you can line the perimeter + use the included scent tags to create a “Pee-rimiter” (LOL) around your camper. And for those squeamish about spraying it, there are also dried shaker versions too!

how to use fox or coyote pee to keep mice out of camper

And if they don’t leave after a week or so… some mess free, poison free, contained traps

Sometimes you just need the mice out now and must “thin the herd” before your other methods kick in… so you have to set some traps.

I am very against using any poisons as it’s very dangerous for other animals that get into it/eat the dead mouse. Besides the fact that the mouse will die somewhere random and stink as it rots, there’s also the potential for it to die or be eaten outside of your camper and kill the birds that eat them such as owls, foxes, coyotes, and even your pets.

With that being said, these clear enclosed mouse kill traps are easy to check and ensure no grossness is able to leak out onto your RV floors once a mouse is caught.

See also
27+ DIY Fire Starters That You Can Make At Home (+ The BEST 5 You Can Buy!)
mouse traps to use in rv

More tips on how to keep mice out of your camper

  • Use vaseline or aquaophor on any out of sight surfaces they might rub against – they hate getting things on their fur!
  • Top anything you can with cayenne pepper as an extra precaution
  • Use copper scrubbies with slits to keep cords safe from rodents trying to get in while hooked up
  • Use bubble style screens over exhaust ports and referigerator vents to keep bugs/mice out but keep the ariflow
  • Some people swear by LED Ropes under the perimiter of the RV
  • Soak a bowl of rice with pure peppermint oil to make the smell last longer
  • Pay special attention to the tires and jack – some people make a barrier of sorts with aluminum flashing material to prevent mice from climbing the tires and such
  • Crawl under your camper at night (with the lights on inside) to have an easier time spotting any tiny holes… just look for where the light shines through
  • Dryer sheets seem to rarely work – worth a shot if you have some, but alot of people don’t have much luck with it.

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