Gnavex | Ultrasonic Car Rodent Repeller
Gnavex | Ultrasonic Car Rodent Repeller
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Gnavex | Ultrasonic Car Rodent Repeller
Sound and Light, Working Together
Gnavex pairs frequency-shifting ultrasonic sound (9–65 kHz) with bright red and white strobe flashes. The constantly changing pitch and light make your engine bay an uncomfortable place for rodents to settle, while you get on with your day.
Protect Your Wiring Before Damage Starts
A parked car’s warm engine bay is an easy target for rodents. Chewed wiring and hidden nests can mean costly repairs. Gnavex works quietly under the bonnet/hood every time you park, helping keep your engine bay clean and your wiring intact.
Set It Once, It Runs Itself
Gnavex switches on automatically when you turn the engine off and rests when you start driving. There’s no switch to flip and nothing to remember: protection when parked, standby on the road.
What Our Customers Say
Excellent 4.8 / 5
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Straightforward Installation
I was looking for something I could install without cutting into the car's wiring. The tie-band mounting made the setup much simpler than I expected. I also like the automatic on/off feature, since I don't have to remember to switch the device on every time I park the car.
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Useful for Cars Parked Outdoors
My car spends most nights in an outdoor parking space, and I've been looking for a way to make the engine bay less inviting to mice. The combination of ultrasonic sound and flashing lights is an interesting approach. The display is handy for checking which mode is selected
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Good for the Garage Too
I wanted a device that could potentially be useful in both my vehicle and the garage where I store tools. Having separate vehicle and indoor modes gives it more flexibility than a car-only product. The different power options are another plus because they provide choices for different setups
Why Settle for Less
A closer look at what sets Gnavex apart from basic repellers.
| Gnavex | Basic Repellers | |
|---|---|---|
| Ultrasonic + LED Strobe in One | ||
| Frequency-Shifting 9–65 kHz | ||
| Auto On/Off with Engine | ||
| 3 Power Options | ||
| Vehicle & Indoor Modes | ||
| Digital Frequency Display | ||
| Heat-Resistant Housing |
Why Choose Gnavex?
Smart rodent protection for the car you rely on.
Frequently Asked Questions
How does Gnavex work?
How does Gnavex work?
It emits frequency-shifting ultrasonic sound between 9 and 65 kHz together with flashing red and white LEDs. The changing sound and light make the engine bay an uncomfortable place for rodents to settle.
Will it drain my car battery?
Will it drain my car battery?
Gnavex runs only while you’re parked and switches to standby when you drive. If your car will sit unused for several weeks, we recommend switching to USB or battery power, or switching it off.
Can I use it without wiring it to my car battery?
Can I use it without wiring it to my car battery?
Yes. Gnavex can also run from a USB cable or from a battery (not included), which is handy for stored cars or indoor use.
Is it safe around pets?
Is it safe around pets?
Gnavex uses no poisons or chemicals. Don’t use it near pet rodents such as hamsters, guinea pigs or rabbits, as they can hear the same frequencies.
How long does installation take?
How long does installation take?
About 5 minutes. Mount the unit with the included tie bands, connect it to your car battery with the on-board power line, and select vehicle mode. No wire cutting is needed.
What’s the difference between vehicle and indoor mode?
What’s the difference between vehicle and indoor mode?
Press button 1 once for vehicle mode or twice for indoor mode. Each mode has 2 settings that you choose with button 2:
- Vehicle mode: ultrasound + LED flash, or ultrasound + LED flash + alarm.
- Indoor mode: ultrasound + LED flash + alarm, or variable ultrasound only.
Where’s the best place to mount it?
Where’s the best place to mount it?
Somewhere secure in the engine bay, away from moving parts, hot exhaust components and areas that take direct water spray. Keep the speaker facing open space.