Lab-Tested. Rodent-Rejected
NHOU® Mouse-Out delivers long-lasting rodent deterrence for cars, trucks, RVs, and HVAC systems—while also preventing rust. Infused with peppermint oil and predator scent (undetectable to humans), it repels rodents through scent, taste, touch, and fear. Safe for use on metal, wiring, plastic, paint, and electronics. Lab-tested to be 92% effective.
Why Mice Target Modern Vehicles
Today’s vehicles are more vulnerable to rodent damage than ever. To meet EPA standards, many wiring harnesses are coated in soy-based plastic—a food source with a scent that attracts mice. One vehicle can contain hundreds of feet of this wiring, and a single chewed wire can cause no-start issues and costly repairs. NHOU® Mouse-Out, lab-tested and proven 92% effective, helps stop the damage before it starts.
- Repels Rodents
- Peppermint Oil
- Stops Corrosion
- Protects Wiring
- Eco-Friendly
- Predator Scent Infused
Benefits of Mouse-Out
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Automotive, Fleet, and Recreational
NHOU® Mouse-Out delivers up to 12 months of rodent deterrence and rust protection for wiring, undercarriages, and hidden areas. Safe for electronics, paint, rubber, and vinyl, it repels mice drawn to soy-based wiring, prevents corrosion, displaces moisture and salt, and protects seams, fuel and brake lines without trapping moisture.
Farms, Cabins, and RVs
RVs in storage are prime targets for rodents—offering shelter, wiring, insulation, and upholstery to chew. NHOU® Mouse-Out is specially formulated to protect RVs, deterring mice through scent, taste, touch, and predator fear (via a scent undetectable to humans). Safe and non-toxic for use in and around your RV, it also delivers rust protection with corrosion inhibitors that guard metal surfaces during long storage. One spray, total peace of mind.
HVAC Equipment
NHOU Mouse-Out is a safe, non-conductive spray designed to keep rodents away from HVAC equipment and electrical motors. It deters mice from chewing on wiring, eliminates squeaks, penetrates and lubricates hardware, and can be applied directly to motors without producing odors or toxic fumes.
Soy-Based Wiring
Mice are chewing wiring covers more often because auto manufacturers have switched from using petroleum-based plastic to soy-based plastics as they meet the demand for cleaner, greener manufacturing processes. In 2016, a lawsuit filed against Honda claimed the soy-based wiring was irresistible to rabbits. Later that year, a similar lawsuit was filed against Toyota. In July 2017, both Hyundai and Kia were sued for using soy wiring.
Are Rodents Turning Your HVAC into a Nest?
Our HVAC system is prime real estate for mice—warm, hidden, and full of nesting materials. Rodents chew wires, risking electrical fires and system failure. Worse, their droppings contaminate your home’s air with harmful spores circulated through the ducts. NHOU® Mouse-Out helps stop the damage before it starts.
Rodent-Free HVAC. Safer, Cleaner Air.
Prevention Isn’t Optional—It’s Essential!
At NHOU®, we solve real problems. Customers often told us their rodent issues vanished after using our oil undercoating. What began as an unexpected benefit became a focused solution—enhanced with peppermint oil and predator scent to boost rodent deterrence without compromising rust protection.
Where Protection Meets Prevention
Lab-Tested and Unbeaten
After adding peppermint oil and predator scent, we sent Mouse-Out to a third-party lab. The results confirmed it—rodents stay away. Using scent, taste, touch, and fear, Mouse-Out creates an unwelcoming environment for pests while also delivering powerful corrosion protection for your RV, boat, or vehicle.
Spray It. Forget It. Keep Mice Out
Frequently Asked Questions
Absolutely not! NH Oil Undercoating® takes a completely different approach—eliminating electrical issues, improving performance, and extending vehicle life. It even helps reduce corrosion-related warranty claims, which benefits both manufacturers and drivers. That’s why it’s trusted and used by leading automotive dealerships nationwide.
NH Oil Undercoating® is formulated to be low-drip. In rare cases of heavy application, minimal dripping may occur—easily cleaned with Dawn® dish soap or Simple Green®.
NHOU is atomized under high pressure which pushes the product deep into the seams, cracks and crevices where corrosion starts. Once applied, the product removes the moisture in these areas and provides a strong adherence to these surfaces, remaining active with excellent “creeping” and self-healing abilities.
Yes—our oil-based formula chases water, allowing for application even on damp days. In fact, moisture can enhance its ability to penetrate tight seams and crevices. Unlike products that mix with water, NHOU® displaces it—ensuring better, longer-lasting protection.