Pest Eagle – Frequently Asked Questions

1. What is ultrasonic sound?
Human hearing ranges from roughly 16 Hz to 20 kHz. Any sound above 20 kHz is defined as ultrasound, which humans cannot hear. Ultrasound cannot penetrate solid obstacles, has strong directionality, travels only short distances, and attenuates quickly.

2. Can ultrasound really repel mice?
Yes. Rodents and bats communicate with ultrasound and have extremely sensitive hearing. Newborn mice emit 30–50 kHz calls to find their nest before their eyes open (Allin & Banks 1971; Carden & Hofer 1992). Adult mice produce ultrasonic “alarm” calls when threatened and mating calls when content. Their hearing range is about 200 Hz–90 kHz (Fay 1988; Warfield 1973). High-power ultrasonic pulses can disturb and overload this system, causing loss of appetite, panic, and even seizures, driving them out of the protected area.

3. Why use a high-power ultrasonic repeller?
Because ultrasound loses energy quickly and does not pass through walls. A powerful unit ensures that after multiple reflections and refractions the sound energy remains strong enough to cover the entire control area and effectively repel rodents.

4. How does ultrasound cover an entire space?
The sound waves repeatedly reflect off walls and surfaces, creating an “ultrasonic barrier” that fills the treatment area.

5. Will rodents get used to the sound?
Because the frequency constantly shifts and combines multiple signals, mice cannot adapt. Pest Eagle sweep from 200 Hz to 50 kHz and add an air-purifier function, which helps remove odours that attract pests, enhancing and prolonging effectiveness.

6. How does the ultrasonic function work?
It’s an electronic device engineered to generate 20 kHz–55 kHz ultrasound based on decades of rodent-behaviour research. The sound stimulates and stresses rodents, creating an environment where they cannot live or breed, forcing them to leave.

7. Does it kill rodents?
No. It’s a physical deterrent. Continuous exposure may cause loss of appetite or even seizures, but the purpose is to drive them away, not to kill.

8. Will it pollute the environment?
No. It uses sound waves only—no chemicals, no toxins, no odours—so there is no secondary pollution.

9. How does it repel insects?
Similar principle: ants, cockroaches, and other insects also emit ultrasonic signals (around 60–80 kHz). Special ultrasonic pulses disrupt their communication and drive them away.

10. Is ultrasound harmful to humans or pets?
Humans cannot hear above ~20 kHz and the power level is far below anything that could harm tissue, so it is safe. For cats and dogs, avoid settings that coincide with their sensitive hearing range.

11. How should I position the unit?
For optimal ultrasonic performance, place it where pests are active, but do not aim the speaker directly out of a window or door.

12. If pests disappear, should I keep it on?
Yes. Continuous use prevents new infestations.

13. Should I use it even if I have no pests now?
Yes, for preventive protection unless you are certain pests will never enter.

14. What precautions are important?

• Aim the speaker toward an open indoor area; keep at least 1 m clear of obstacles and don’t face windows/doors.
• The device is not waterproof; keep it dry and away from carpets or soft furnishings.
• Maintain cleanliness and remove food sources for best results.
• In restaurants or stores with abundant food, use multiple units as needed.
• Increased pest activity in the first days is normal as hidden pests flee; using glue boards simultaneously can boost catch rates.

15. Does soundproofing affect results? Where is best placement?
Yes. Ultrasound cannot pass through walls, so a unit in the living room will have little effect in a closed kitchen or bathroom. Place units where reflections are maximised, or use additional units in separate rooms.

16. How long until I see results?
Typically 1–2 weeks of correct use. You may still see an occasional intruder, but it will soon leave.

17. Does it use much electricity?
Power draw is very low, at 3W running 24 hours a day for 30 days uses about 2 kWh. That is less than $1/month based on average NSW tariffs as at September 2025.

18. Why repel instead of kill?
Research shows every environment supports a certain “carrying capacity.” If you kill rodents, others soon replace them. By making the environment hostile, ultrasound lowers that capacity and discourages new invaders—repelling is ultimately more effective than killing.

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