
Can You Use Irish Spring Soap To Prevent Mice In RVs?
Mice sometimes sneak into RVs to chew on your wiring, nest in your walls, and browse your pantry. So if you’re on the warpath against rodent intruders, you’re probably willing to try anything to get rid of them. During your search, you may have come across the claim that Irish Spring soap can deter pests.
In reality, there is no concrete evidence to prove that Irish Spring soap is an effective mouse deterrent. It’s unclear where these claims originated, but they have since spread across every corner of the internet.
Soap is quite harmless, so it won’t damage your RV if you try this method. However, you’d be better off searching for more effective pest control rather than wasting time with something that doesn’t work.
Below, we’ll discuss more about how mice react to Irish Spring soap. We’ll also cover some tried and true ways to keep rodents out of your camper.
Does Irish Spring Soap work?
If you’ve ever searched for “easy ways to deter mice,” you’ve probably seen Irish Spring soap somewhere on the list. Plenty of home remedy blogs and guides suggest grating the soap and leaving the shreds close to your doorways, windows, and vents.
It’s harmless to humans, sweet-smelling, and cheap. So what’s the problem?
The problem is that there’s no evidence that Irish Spring soap deters mice at all. Although this claim has been around for years, it’s hard to pinpoint where it started.
Scientific studies
Once Irish Spring soap began to gain popularity as a form of pest control, scientists ran multiple tests to determine whether this tactic is effective or not.
A study by the University of California exposed mice to soap for six months and tracked their health throughout the experiment.
In the end, it appears that soap had little to no effect on mice. In fact, some of the test subjects even ate this substance instead of avoiding it! Some of the mice suffered from minor liver issues, but it didn’t disrupt their behavior in any meaningful way. Most of them were able to completely ignore the soap and continue their lives as usual.
Is it a sales tactic?
Some people believe that the claim may have originated as a sales tactic. But even the creators of Irish Spring soap stated that their product shouldn’t be used as a form of pest control. They insist that their soap was never intended to repel mice, insects, or any other pests.
At the end of the day, using Irish Spring soap in your RV won’t affect the behavior of nearby mice. It seems like the myth around this soap was due to a placebo effect. Perhaps some people shredded soap as a preventative measure and didn’t find any mice after that point.
Maybe the soap doesn’t attract mice, but it doesn’t seem to repel them either.
How to get rid of mice in your RV
Now we know that soap isn’t the best way to deal with mice infestations. So what should you use instead?
Fortunately, there are plenty of ways to deter, trap, or kill mice that are hanging around your RV. Whether you’re interested in natural remedies, lethal traps, or humane alternatives, we’ve got you covered.
Instead of pulling out a bar of soap, try one of the options below.
Natural repellents
One of the main appeals of the Irish Spring soap method was that it was low-impact. At-home remedies are always popular because they don’t require a lot of time and money. You can just use things that you already have around the house and deal with pests in one fell swoop.
Although grated bar soap may not be effective, there are plenty of natural scents and household items that mice will avoid. These little rodents have sensitive noses, so strong scents can affect their behavior. Essential oils are particularly potent, so try some of the following scents:
- Peppermint
- Cloves
- Eucalyptus
- Cinnamon
Soak a cotton ball in these oils and place them around your RV. You can also use red pepper flakes to deter mice. Sprinkle this spice around potential entry points and refresh the barrier every few weeks.
There are also several scented household items you can try. Mothballs, WD-40, and scented dryer sheets can create a scented barrier against pests.
Try these methods, but just remember that natural repellents and at-home remedies aren’t always the most effective options. If mice continue to appear, it’s time to consider harsher treatments.
Physical traps
Mousetraps are probably the first thing you think of when mice appear within your camper. Although the traditional snap traps are effective, there are other designs you can experiment with.
Glue traps are fairly effective, especially for large infestations. These sweet-smelling sheets attract mice and trap their feet, tails, and fur. Large sheets can catch multiple mice at once. However, this design is inhumane because the mice die slowly. You can kill them once they’re trapped, but many people don’t enjoy this hands-on approach.
Most traps are lethal, but others allow you to keep the mouse alive so you can release it into the wild. Unfortunately, this method only allows you to catch one or two mice at a time. It’s not the most efficient option, but it might soothe your conscience.
Just remember to take captive mice far away from your RV when you release them. You don’t want to get caught in a loop where you repeatedly catch and release the same mice!
Chemical treatments
Chemical treatments are the harshest and most effective way to deal with rodent infestations. Rat poison is a popular choice because mice take it back to their nests once they eat it. From there, it spreads and kills large populations. On the downside, now your RV is full of dead mice, and you may not be able to remove them all by yourself.
If you want effective pest removal, you may need to hire a professional exterminator. They can fumigate your entire RV and remove rodents in the walls or furniture. However, you only need this level of intervention if you’re dealing with an extreme infestation.
RVs are fairly small, so you should be able to spot the issue before it becomes serious.
Other ways to keep mice out of your camper
Prevention is the best way to keep your camper safe from pests. Once they arrive, it’s difficult to get rid of them. That’s why it’s important to properly mouse-proof your RV!
Begin by sealing up potential entrances into your vehicle. Mice are small and flexible, so they can squeeze through tiny openings. In addition to sealing your windows and doors, pay attention to holes, cracks, and vents in your RV exterior.
You can use caulk to seal these weak areas, but steel wool is the best option for vents. Mice cannot chew through this material, plus it’s porous enough to permit airflow.
Make sure you keep track of all your RV maintenance and repairs with an online tool such as RV LIFE Maintenance. Not only can you keep all of your documents in one place, but you’ll also receive timely reminders when maintenance is due to help you avoid costly repairs.
In addition, you should make your living space unappealing to mice. Clean up spills as soon as possible, regularly take out the trash, and keep your cupboards sealed.
Use airtight containers in your pantry as well. Mice can easily chew through cardboard and plastic bags if they smell something tasty inside.
Get tips from other RVers
Forums such as iRV2.com and blog sites like RV LIFE, Do It Yourself RV, and Camper Report provide all the information you need to enjoy your RV. You’ll also find brand-specific information on additional forums like Air Forums, Forest River Forums, and Jayco Owners Forum.
Related articles:
- The Best Way To Get Rid Of Mice In An RV
- Look Out For These Signs Of Pest Infestation In Your RV
- Protect Your Family by Keeping Mice Out Over the Winter

Nice article. Thanks. I also use the product Mouse Free Barrier Spray Coating for the bottom of my trailer. Works great and easy to spray on.
The soap is strong enough though to deter any pests. I use Dawn dish detergent to kill Spotted Lantern flies, flies, ants etc…it is supposedly good against Wasps as well. It is safe and doesn’t harm Wildlife. It works well.
There’s NOTHING that will get rid if mice except a mouse trap !
LMAO Ever heard of cats?
Tried the soap thing 1 year, waste of time. They ate it and still pooped in the 5th wheel. What works is the trap cubes from decon. Place them on the leaf springs on both sides of the axles, one each where the front jacks enter the storage bay and one each at each side of the basement storage bays and 1 each each side the entry door. Be sure to use latex gloves when deploying.and removing. We find no more mouse poop.
I live on a small ranch, and for years had rats eating into all the water lines and leaving a mess in our RV. We caught many, but even more inhabited our trailer. We cut up Irish Spring bars into cubes and placed them around the trailer. We haven’t had any signs of rodents in two years now. We just replace the soap when it’s aroma is dissipated.
I use Irish spring to find out if there are mice in my house. They love it,devour it,will eat through the package to get to it. I have had so many frustrating experiences with this soap. So unless the mice in my home are different from others it’s an absolute myth.
Irish Spring absolutely does not work. We had 2 bars in our camper and the mice ate 1/2 of each bar.
I put cloves, bounce sheets and Irish Spring Soap and it worked shaved it in my untencil drawers and around the trailer for the First time and No Mice So something worked , I really think the Soap kept them out of the drawers and cabinets
I tried Irish Spring in several campers, the rats and mice ate it like candy
I hate yes hate and am deadly freaked out about mice. I will try anything to avoid having vermin. Irish spring is manly but I will like it too if it works.
I was using peppermint oil. Then found peppermint melting blocks for those scent diffusers. Broke up the blocks and put them in drawers and cabinets. Haven’t seen any mice for 6 months
I recently helped a woman who was having car problems here in the Tucson area. She had 4 bars of Irish Spring under the hood of her car. 3 of the 4 bars had rodent teeth marks on them.
Steel wool works well but has one downfall. It rusts. It’s almost impossible to keep all forms of moisture completely out of RV basement storage, under the body, etc. High humidity, condensation, rain, etc. The rust tends to stain, discolor inside storage areas. Instead use steel bronze. It available on line and special order from Home Depot, etc. About the same price lasts forever. Works just as well.
I had mice in my rig. I cleaned then put Irish spring half bars in the cavities that mice liked the most. Mice are still on my property evidenced by their droppings. They have steered clear of my Rv. It works similar to rosemary but the smell stays strong for a longer timeframe. Yes it works in our rig.
I have Irish Spring with mouse teeth marks on it! We’ve had several mouse issues. We now use a 3 prong preventative approach.
1- Ring the RV with LED strung lights. The mice usually will not cross the lights.
2- Spray a peppermint oil mix around the RV. You can buy premix or make your own with products on Amazon.
3- Place glue boxes in the storage bays. Just.In.Case!
If you have mice, put glue boxes EVERYWHERE! We add a little peanut butter or cheese to entice the little buggers.
If you have pets, NEVER use the poison bait.
Peppermint of oil from health food store $8- $12. for a small bottle. Must be peppermint and strong. Then you get moth balls and generously dab oil on some and put them where they’re coming in or even the corners. The peppermint burns their ears, eyes and noise. They leave asap. If they are everywhere like mine was I used the whole bottle and came back in a week and it was still powerful enough to burn my eyes. The mice have never come back.
I put an Irish Spring bar under the hood and they ate on it. Lots of teeth marks. So much for Irish Spring.
I use Irish Spring, every year I forget to remove it and the soap is totally eaten by spring.
Hi Emily, I’m a professional pest control technician and have been in the industry for over twenty years.
All those home remedies only work for about two weeks, then they adapt to the smell or noise, ( sonic devices).
Sanitation is 80% of pest control, exclusion is 10% and trapping/ baiting is 10%. Tim
I can tell you for an absolute FACT Irish Spring Soap does not work! We placed a bar under the sink where the mice were getting in through a plumbing penetration, the mice ATE the bar of Irish Spring. I have photos to prove it! Little mice chews on what’s left of the bar.
As much as I dislike the violation of a mouse or mice in my RV I will never again use an inhumane glue trap. Use a quick trap rather than gluing a mouse to a piece of cardboard and letting it die a slow agonizing death.
I found success with Fresh cab.
Irish Spring soap works great for keeping squirrels out of flower boxes. We have dozens of squirrels around our house and this is the first time we used the soap. Not one plant dug up or soil disturbed since.
Irish Spring soap, we have been RVing for over nine years and the pass seven years we have been using Irish spring with no issues at all. along with dryer sheets. So, from one to ten l give Irish Spring a 25.
I tried the soap as a deterrent for mice not that I ever had very many. I finally got rid of it as I couldn’t stand the smell myself. I have since sealed up all possible entry points and that has pretty much solved all my rodent problems.
Put peppermint extract 2-3 drops from any health food store in cotton balls in an open sandwich bag. Place in every 10sq feet,no mouse in our camper going on 5 years , all park Campers after first heavy freeze,mice have already found homes.
Instead of steel wool, use bronze wool. It doesn’t leave rust stains and lasts longer.
We use Fresh Cab packets, placing them on the tires, tongue, and in the pass through of our 22 ft camper. Absolutely no mice issues in an area where mice are everywhere. We use them in our home/attic as well. Very effective.
Corrected…I’m so disgusted by the notion I have completed my sentence.
Irish Spring: Safe for short term human skin contact, LETHEL to the ecological environment.
The chain of life you want to see when camping is dependent on the bugs and lizards you may not want to, which leaving a bunch of shredded soap (my what the heck imoji face) at a campsite WILL kill. Your songbirds MUST have access to the critters your soap piles will kill.
Urban legends are often not just dumb but deadly.
Also, countless people have been before you and will come after you. Do YOU want piles of melted filthy dirty, left behind soap piles around your campsite?
Respect the environment and the other people after you, don’t put hazardous garbage out. It was never true.
We used Irish Spring soap for a couple of years and thought it was the answer to our problems……until it wasn’t. When we picked up the camper after storing it for a short time, the mice ate almost all the soap.
I sealed all the small openings in the bottom of the trailer and use a scent free soap to clean the floors and other hard surfaces in the trailer; no more mice.
We have used Irish Spring in both our Class C and travel trailer for years. Never had mouse problem. However, in our home, it did not work. We live near an open area and have a basement. Now to take care of that problem, we mix Jiffy Cornmeal Mix with baking soda and leave it out
The mice eat it and can’t burp. It is safe for pets and birds.
I never thought about it before, but so far we haven’t had a mouse problem. Then it occurred to me that we travel with our cat onboard…
I have tried everything. Nothing works. I keep trailer spotless, when not used. And we sealed up with foam.tried soap, dryer sheets. Nothing works. Whenever we travel sure enough in the night a mouse appears and we try to trap it.
I use Irish spring green soap under cabinets small pieces scattered around I do chip away every few months to refresh lots better than moth balls I have never had mice in the camper I sweep freely take out trash wipe off counters wipe off tires with fabric softer sheets that also helps from them climbing up. Good luck.
Many people make the mistake of putting mouse and rat poison in the vicinity of their home and RV: place poison traps away from areas you wish to protect as the traps attract these pests, drawing them into the area.
By placing the traps away from the areas you wish to protect, you draw rodents away. Rats watch mice to see where they’re feeding, and actually use them to bring food to them.
I had a mouse in my truck so I tried the Irish Spring trick and the mouse ate a good chunk of the soap!!!
I’ve used Irish Spring for decades as my bath soap. I can attest no mouse has ever crawled on me.
We used to have a horrible mouse problem in our offices. You could see them in the fluorescent light fixtures, walking around on the fixture covers. We started keeping cinnamon apple scented plug-in air fresheners in each office. No more mice. We took this idea to our fifth wheel and (so far), no mice have made their presence known inside the camper.