Q: Will mothballs keep mice out of my camper?

Mothballs are not recommended for use inside living areas. They contain naphthalene , a known carcinogen , and are generally ineffective compared to physical barriers. In my experience, it works best in summer, and in winter, the mice will return after a week or so.

Question 1

What is the best mouse repellent for an RV?

Accepted Answer

The most effective repellent is a combination of sealing gaps with copper mesh and using specialized "rodent tape" on wiring. In my experience, scents like peppermint require respraying every three days to remain effective. On the exterior, you may have to respray more often especially if it rains.

Question 2

Can mice chew through RV spray foam?

Accepted Answer

Yes. Standard spray foam is easily gnawed. For a permanent barrier, pack holes with copper mesh before applying foam.

Question 3

Will mothballs keep mice out of my camper?

Accepted Answer

Mothballs are not recommended for use inside living areas. They contain naphthalene, a known carcinogen, and are generally ineffective compared to physical barriers. In my experience, it works best in summer, and in winter, the mice will return after a week or so.

Question 4

How do I keep mice out of my RV during winter storage?

Accepted Answer

The most effective method for winter storage is a "multi-layered" defense. First, remove all food, including paper products (which they use for nesting). Next, seal every exterior gap with copper mesh and a rodent-resistant spray foam like Tomcat Rodent Block. Finally, many full-timers swear by Mouse Free, a specialized lubricant sprayed on the undercarriage that makes the surface too slippery for rodents to climb.

Question 5

Does Irish Spring soap or dryer sheets actually repel mice?

Accepted Answer

While a popular "old wives' tale," many RVers will testify of mice nesting in dryer sheets and eating Irish Spring soap. These may provide a pleasant scent, but they are not reliable deterrents. For a scent-based repellent that actually works, use 100% pure peppermint oil or professional-grade pouches like Fresh Cab, and remember to refresh them every 30 days.

Question 6

What is the best way to protect RV wiring from being chewed?

Accepted Answer

Rodents are attracted to the soy-based insulation used in modern RV wiring. To prevent thousands of dollars in damage, wrap vulnerable wire harnesses in capsaicin-infused rodent tape (often called "Honda Rodent Tape"). For extra protection, you can install an ultrasonic battery-operated repellent under the hood or in the battery compartment to make the area uncomfortable for nesting.

Question 7

Can mice get into my RV through the toilet or holding tanks?

Accepted Answer

Mice are excellent swimmers and climbers. They can enter through the rooftop plumbing vents or gaps where the tanks meet the floor. Ensure your roof vents have fine wire mesh covers and use expanding foam to seal the "annular space" (the gap) around the pipes where they pass through the RV floor into the belly.

Question 8

What should I do if I hear scurrying in my RV walls?

Accepted Answer

If they are already inside the walls, "repelling" them won't work—you must trap them. Place snap traps perpendicular to the walls in cabinets or behind access panels. Avoid using poison inside the walls, as a rodent that dies in an inaccessible space will cause a persistent, foul odor that is nearly impossible to remove from RV insulation.

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