How to drive mice away with ultrasound? - briefly
Ultrasonic repellents emit high‑frequency sounds (typically 20–30 kHz) that are uncomfortable for rodents; install devices near entry points and run them continuously to maintain an inhospitable acoustic environment. Ensure coverage of all affected areas and replace units as the battery depletes.
How to drive mice away with ultrasound? - in detail
Ultrasonic emitters generate sound waves above 20 kHz, a range inaudible to humans but perceived as distressing by rodents. The devices exploit the sensitivity of mouse auditory receptors, causing discomfort that prompts relocation from the treated zone.
Effective frequencies fall between 30 kHz and 50 kHz; lower values may be audible to pets, while higher frequencies lose penetration power. Sound pressure levels of 80–90 dB SPL at the source provide sufficient intensity to reach the target distance without exceeding safety limits for household environments.
Placement guidelines:
- Install units at ceiling height or on walls, facing open pathways where rodents travel.
- Space devices 5–10 m apart in larger rooms to maintain overlapping fields.
- Position near entry points such as doors, vents, and gaps in foundations.
- Ensure unobstructed line of sight; furniture and plaster can attenuate the signal.
Operational considerations:
- Continuous emission is standard; intermittent cycles (e.g., 5 min on, 5 min off) may conserve energy but reduce efficacy.
- Power sources include mains electricity, battery packs, or solar panels for outdoor applications.
- Verify that the unit complies with local electromagnetic emission regulations.
Limitations:
- Solid barriers (concrete, metal) block ultrasonic propagation, creating dead zones.
- Young mice may adapt over weeks, diminishing repellent effect; rotating frequencies can mitigate habituation.
- Presence of other ultrasonic devices (e.g., pet trainers) can interfere with performance.
Safety and maintenance: