Use the audio consistently for several nights. Ultrasonic repellents are most effective as a "slow burn" deterrent rather than an instant fix.
Mice and rats have a much broader hearing range than humans, extending well into the ultrasonic spectrum (up to 70–90 kHz). Use the audio consistently for several nights
Sound waves at these frequencies do not travel through walls or furniture. For the best results, place the speakers in the open, directed toward the area where activity is highest. place the speakers in the open
The volume needs to be high enough to fill the room, but be mindful of pets. Dogs and cats can hear these frequencies and may become stressed. Use the audio consistently for several nights