In this post, we’re taking a deep dive into the best mouse repellents for RV use.
We previously published a post on how to keep invasive mice out of your RV for good, and as we mentioned, there are many things we can do to help with this important task. But not every mouse problem can be solved with the same tactics. What works on one RV or in one location may not work in another.
And here’s the thing:
Mice are more than a nuisance. They present a very serious health hazard due to hantavirus. They’re also capable of doing thousands of dollars worth of damage to your RV by chewing on wires and messing up all things electrical.
So, getting rid of mice is certainly important. But using a pest repellent that deters mice from entering your home on wheels in the first place is an even better form of pest control if you can find something that works in your situation. There are lots of ways to try tackling this creepy problem, so let’s get to it!
- 1) How Do Mouse Repellents Work?
- 2) The Best Mouse Repellents to Keep Rodents Out of Your RV
- 3) How Well Do Mouse Repellents Really Work?
- 4) Fill all possible openings with something mice can’t chew through.
- 5) Remove food from the RV
- 6) Clean the RV well
- 7) Got a Mouse Problem Already?
- 8) Share your experience
- 9) Free RVing Tips, Tricks, Reviews, Giveaways & More
How Do Mouse Repellents Work?
Very simply, mouse repellents (and all rodent repellents) work in various ways by deterring mice and rats from entering a dwelling.
Most work based on scent, though there are also ultrasonic pest repellers that can keep mice out of your home by emitting ultrasonic frequencies or impulse waves that deter rodents from coming close to the sound.
Note that substances like mothballs and ammonia have worked for some people based on the odors that they emit, but we’re not going to be including these types of items in this post.
First, we’ve covered mothballs in a previous post entitled, “Do Mothballs Keep Mice Away?“.
And although we understand that substances like mothballs and ammonia can be effective as mouse repellents, they’re really not safe for people and pets who may be in the area, so we’re choosing to stay away from them for the purposes of this post.
Items like mothballs and ammonia may be effective in some situations, but they’re poisonous to kids & pets.
Children, dogs, and cats are at particular risk of ingesting something dangerous that’s left out to repel mice. It can be risky to use substances that have the potential to cause serious harm.
Now let’s get down to business and take a look at the best mouse repellents available to keep those nasty, disgusting, disease-carrying adorable little critters out of your RV!
The Best Mouse Repellents to Keep Rodents Out of Your RV
Before we jump into our list of the best mouse repellents, we want to acknowledge that many products work well in some situations but not in others. We’ve found that to be true with most we’ve tried. Some have worked pretty well, and some haven’t worked at all despite seeming to be effective for other RVers.
For example, many people comment that dryer sheets work wonders in keeping mice out of their RVs. Others say dryer sheets are nothing but an invitation to build a nest using expensive dryer sheets provided by the RV owner.
You see where we’re going here. Peppermint oil worked great for you and did nothing for us. Irish Spring soap worked great in Harry’s RV, but the mice in Susan’s RV eat Irish Spring soap for breakfast, lunch, and dinner.
So we’re sharing the “best mouse repellents” because they’ve worked for many RVers to keep mice out of their rigs. Not because they work in every situation. We haven’t found that magic bullet yet. Let’s clarify and consider this post the best mouse repellents worth trying.
In no particular order, here they are.
Cayenne Pepper
If you have an area where mice have been getting in, and it’s a place you can’t really close off to mice completely, you can try using cayenne pepper mixed with water in a spray bottle.
We wouldn’t suggest trying this if you have pets or young children, not because cayenne is poisonous but because it can cause a painful burning sensation. You wouldn’t want your cat or dog getting cayenne pepper spray on their paws.
In fact, if you use cayenne pepper as a mouse repellent, you’ll want to use gloves whenever you’re mixing the solution of pepper & water and when you’re spraying it. And be sure to avoid getting it in your eyes!
Some RVers who’ve sprayed cayenne pepper on the undercarriage of their RV have had success with it. And mouse mitigation experts report that cayenne has a deterrent effect against rodents, so it made our list.
- Starts with whole, ripe peppers
- Dried and milled under strict quality controls
Essential Oils
Many RVers swear by essential oils such as peppermint, eucalyptus, rosemary, clove, and oregano oils as natural mouse repellents.
We’ve personally used peppermint oil with mixed results. Essentially, it worked… until it didn’t.
Essential oils have very strong aromas that mice supposedly don’t like. The most commonly used are peppermint and eucalyptus. However, there are mixed reviews on the effectiveness of essential oils in general.
Some RVers use peppermint oil on cotton balls placed in various areas in and around the RV. Again, many swear by its effectiveness, while others say it didn’t work at all.
You can mix essential oils with water in a spray bottle, but don’t dilute the solution too much, as it will lose its effectiveness quickly. In fact, pest control experts say that while they’ve seen success using peppermint and eucalyptus oils, they had to be reapplied often for the desired impact.
Here are a couple of commercial sprays you can try. We suggest reading user reviews (which also offer application suggestions) to get a sense of how successful each product has been in real-life use. Again, some methods that work great for some people don’t work at all for others.
Mighty Mint Peppermint Oil Rodent Repellent Spray
56% of Amazon reviewers give this product a 5-star review, but 11% give it a 1-star review. Like most other methods, your mileage may vary!
Mighty Mint is made with an “extra-concentrated strength” pure-origin peppermint oil that’s locally sourced in the Pacific Northwest.
It can be used indoors or outdoors.
- Naturally Safe for People and Pets - Smells Good Too!
- Extra-Concentrated Strength for Long-Lasting Protection
Peppermint Repellent Natural Spray for Mice, Rats & Rodents
This product gets very similar reviews (percentage-wise) to the peppermint spray mentioned above.
This is a gallon container of peppermint oil spray, which is noted by the positive reviewers to work fairly well. We’ll note that it’s only 1% peppermint oil and 99% inactive ingredients, which may account for some poor reviews.
- POWERFUL PEPPERMINT ESSENTIAL OIL FORMULA – Long Lasting Indoor & Outdoor Protection. Use To Protect Against Rodents, Mice/Mouse & Rats
- READY TO USE SPRAY - Easy To Use, Just Shake & Spray. No Messy Traps
Harris Rodent Repellent Spray
This one uses a combination of peppermint oil and cinnamon oil to repel rodents.
It can be sprayed under, around, and inside your RV (though be aware that it has a strong smell!) and in the engine compartment of your motorhome or tow vehicle.
It receives about the same percentage of very positive and very negative reviews as the other essential oil products we’ve mentioned.
- Plant Based Active Ingredients - Repels mice and rats using plant based peppermint and cinnamon essential oils that have been proven to work
- Long Lasting - Works quickly and offers long lasting protection against rodents invading your house and car engine
Before we move on to other categories of rodent repellent, we’ll note that most essential oil repellents require regular reapplication to work their best.
Some pest control experts say that essential oils only work when applied very often, even daily! But some RVers who’ve had success with oils mention that they reapply on a weekly basis.
Ultrasonic Repellers
Ultrasonic mouse repellents offer another approach to deterring mice from entering an RV or home.
When shopping for an ultrasonic repellent device, note the amount of power it uses and keep in mind the power source for your RV, particularly during periods of long-term storage.
Mitscoots Mice Repellent Plug-in Ultrasonic Pest Repeller
This plug-in device gets very high marks from Amazon shoppers. In fact, we included it because its 86% 5-star ratings and comparatively few 1-star ratings indicate a particularly high success rate.
This repeller uses dual speakers to emit high-impact ultrasonic sounds between 25KHz-60KHz. (Apparently, mice hate that!)
It also uses 9 LED strobe lights to offer visual repellents in the dark, with the idea being that the bright strobe lights will add to the deterrent effect of the sounds.
4 adjustable modes allow you to choose the desired effect.
This type of repellent is odor-free and chemical-free, using only sound waves and lights to deter pests.
Note that these repellers need to be plugged into a power source. Input voltage (AC) is 100-240V, and working DC voltage is 9V.
This is not a battery-operated unit.
- How it works: Ultrasonic Rodent Repeller consists of a transducer and dual speakers, emits high impact pressure wave and 25KHz-60KHz changing...
- 4 in 1 Ultrasonic Rodent repellent: You can manually adjust these 4 modes to achieve the effect you want. You don’t need to buy various products for...
RibRave Ultrasonic Mouse Repellent
96% of this device’s ratings are 4- and 5-star. So lots of people say it’s very effective, with only 1% of reviewers reporting a very negative (1-star) experience.
Like the Mitscoots unit, it has 4 manually adjustable modes.
There are 3 speakers emitting various sounds, along with 9 LED strobe lights. It causes both auditory and visual sensations that mice will hate.
RibRave says it repels mice, rats, cockroaches, bats, spiders, and squirrels. (We’ve had bats on board… twice… and that’s no fun either!)
This is a plug-in device and is not battery-operated.
- How it works: Ultrasonic mouse repellent consists of a transducer and dual speakers, emits high impact pressure wave and 25KHz-60KHz changing...
- 4 In 1 Ultrasonic Mouse Repellent: Free to set a repelling mode based on your needs. You don’t need to buy various products for different kinds of...
Loraffe Battery Operated Ultrasonic Rodent Repeller
This ultrasonic device doesn’t get the consistently good reviews of some of the others on this list, but we wanted to include it because it’s a battery-operated ultrasonic device with about 78% 4- and 5-star reviews.
We did see a number of reviews that mentioned it didn’t work well for protecting the engine bays of several hopeful vehicle owners.
That said, this is a two-pack of ultrasonic pest repellers using variable pulses that are inaudible to humans but apparently disturbing to rodents.
The unit also has 2 LED strobe lights and runs on 3 AA batteries (not included).
It does have a low-power alarm to let you know that batteries need to be changed, though several reviewers mentioned that they didn’t need to change thems for months.
- Emits a combination of fluctuating ultrasound waves and dual LED strobe lights to deter rodents from entering your automobile
- Operates on 3 “AA” alkaline batteries, lasting up to 45 days
Fresh Cab Botanical Rodent Repellent
Fresh Cab combines balsam fir oil and other fragrances with plant fibers in small pouches that can be distributed as necessary throughout the RV.
They actually smell nice enough to toss into a closet, glove compartment, or engine compartment (remove before driving).
Thousands of reviewers and many RVers swear by Fresh Cab, saying it works well and is simple to use.
Fresh Cab says that one pouch covers about 125 square feet, and that pouches should be replaced every 30 days for best results. Some users mention that they don’t change pouches for 90 days, and they continue to emit the desired strong smell.
Fresh Cab is made in the USA by EarthKind, the only company to develop a botanical rodent repellent that meets federal EPA standards for professional pest control.
- FAST ACTING - Fresh Cab keeps mice out! For preventative use in non-infested areas, simply place one pouch for every 125 square feet
- NON-TOXIC - Made with balsam fir oil, this plant-based alternative freshens and protects our storage areas for up to 90 days
Mouse Free
One of our readers kindly left a comment on our post entitled “How to Keep Mice Out of Your RV for Good” saying that they use Mouse Free, and it works very well for them. They have a travel trailer located in the woods and sprayed the underside with Mouse Free.
We’ve gotta say, if something can successfully dissuade mice from entering a trailer parked in the woods for an extended period, that’s a pretty good indication of its effectiveness.
So, despite the fact that we probably wouldn’t use it ourselves because, as avid DIYers, we work under our RV sometimes and wouldn’t want to get gunked up with the stuff, we took a look at it anyway. 89% of Amazon reviewers had a great experience with it, so here it is on our list of best mouse repellents.
This is not an inexpensive product by any means. But the manufacturer notes that a gallon of Mouse Free will coat and protect up to a 24′ RV. (If you have a smaller rig, note that anything you don’t use won’t expire.)
Also worth noting — Mouse Free, like the others on this list, isn’t intended to eliminate mice that have already infested a location. It’s a repellent that’s designed to deter rodents from entering an area in the first place.
An air compressor is required to use as a spray applicator and isn’t included. Mouse Free is applied using air pressure between 80-100 PSI.
- Coat and protect up to a 24’ RV. Unused product does not expire and can be saved for your next application.
- Air compressor (NOT included) required for spray applicator. Simply spray the entire undercarriage of your motorhome or trailer using a compressed air...
How Well Do Mouse Repellents Really Work?
Many mouse repellents work… to a degree. But honestly, no one method or product is foolproof.
In the final analysis, using mouse repellents and taking a few other important actions are your best bet for keeping mice from invading your RV.
Along with a mouse repellent that works best in your particular situation, we strongly suggest taking three important additional actions, particularly if your rig is going to be in storage.
Fill all possible openings with something mice can’t chew through.
An important step for deterring mice from getting into your RV is closing their paths to entry. That means filling holes and cracks with something mice can’t chew through, like steel wool.
- Steel wool super fine grade #0000 used in cleaning, polishing, buffing and refinishing
- Uniform, high quality metal strands with gentle abrasiveness
Better yet, use copper mesh. It is more expensive, but won’t rust. That makes it a worthwhile choice for areas that may get wet.
- The copper mesh is made of 100% pure copper, which is rust-proof and durable. Braided by multiple strands of copper wire, it has excellent ductility...
- Shielding mesh is the perfect solution for plugging holes and filling gaps.The copper mesh is bendable, and the corresponding number is cut according...
Remove food from the RV
We’ve established that mice follow their noses, to this one needs no further explanation. If you’re storing your RV for a period of time, you really need to remove all sources of food from the rig. (And other items with a strong smell… deodorant, for example.)
There’s no way around this. Mice can smell your peanut butter from 87 miles away. (Okay, we made that statistic up, but it might not be that far off!)
Clean the RV well
Check out our posts on the best RV vacuums and our vacuuming tips to get your rig as clean as possible, especially prior to storing it for the winter or for any long period of time. This will help remove small crumbs of food that may remain, which can still attract mice.
All of these actions, in conjunction with a good mouse repellent, will help to keep your RV mouse-free!
Got a Mouse Problem Already?
If you’ve got a problem with mice and need to banish them from your kingdom (or just need some light entertainment), check out our video showing how we made an emergency (humane) mouse trap!
Many RVers (most of us?) have dealt with mice, both successfully and not-so-much. If you have a happy (or sad) story about little guests on your rig or successfully preventing or evicting them, tell us all about it in the comments below.
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Steve Clancy
Sunday 22nd of January 2023
I'm actually looking fore something to keep mice/rats out of the engine compartment of our autos. They sit on top of the engine block where they eat and poop. So far nothing has worked. Going to try the ultrasonics next.
john fleming
Thursday 19th of January 2023
I love your improvised mouse trap and humane relocation. I could not stop laughing for 5 minutes. Was that an 'Apple' or Android mouse you were relocating ?
TheRVgeeks
Thursday 19th of January 2023
LOL! Thanks,@john fleming! The victim actor in that was an Apple mouse. We're an all Apple house, so we use glue traps for Android mice! 😉😂
Tim
Wednesday 18th of January 2023
Great article. We have found the best thing to do to reduce the risk of mice is remove ALL food when the RV is stored. My sister had a huge mouse problem and tried most of the above items. She failed to remove the food from her RV. When in storage we place urinal pucks in selected areas - closets, 5th wheel basement, water closet etc. We have not had a mouse problem since we started using the pucks.
TheRVgeeks
Thursday 19th of January 2023
Can't blame the mice, Tim... not real fond of the smell of urinal pucks ourselves! LOL! Glad it's working for you!
Kat
Tuesday 17th of January 2023
We have used Fresh Cab since we bought our 25ft Airstream and have never had any mice. Change it out quarterly [3mos] year round regardless if we are traveling or not. We are able to store our rig on our property, parked on a gravel pad so that makes it easy to access and refresh the Fresh Cab packets. Use one in our tow vehicle also. If traveling in the winter, especially camped in the desert, we also use rechargeable solar lights under both the camper and truck at night to deter pack rats and have been successful with that so far.
That said, the last winter we traveled [2021-2022] we got mice in the crawl space and the living space of our house. We keep Fresh Cab in the crawl space and when home refresh it quarterly, but didn't have anyone do that for us while we were gone for 6mos. After getting rid of them, we put a string of LED lights in the crawl space and leave them on 24/7. Next time we will have our son come refresh the Fresh Cab for us and may purchase one of the ultrasonic products also and opt to leave just that circuit on instead of shutting off the power main breaker completely.
Appreciate the topic covered and your great reviews. Well done, thanks.
TheRVgeeks
Tuesday 17th of January 2023
Hey @Kat... sounds like you've got it all figured out and working! Thanks for sharing your experience here. We really appreciate it!
Pat
Tuesday 17th of January 2023
I've had good luck (so far!) with Grandpa Gus's Potent Mouse Repellant. I've got the sachets scattered in my Class C and under the hood and refresh with the mouse repellant spray.