Ultrasonic means that it’s above the average human’s hearing range. It would really annoy you if you could hear it. However, you can press the test button to drop the sound into an audible range. We don’t recommend doing this for a long time because
A. It’s not repelling pests when in test mode
B. It’s annoying for you
The device is designed to be above the average cat or dog’s hearing. It does sweep through a wide range of sounds, and occasionally a dog or cat might hear it when it sweeps down into the lowest register. This device is safety tested to ensure that the decibel rating is not loud enough to damage a human or pet’s hearing. For the 1/500 pets that can hear it; it’s the equivalent of standing in a parking lot with a car alarm going off nearby – annoying but not harmful.
No, in fact we usually suggest using two devices together when dealing with a stubborn situation. Setting the Confusion Switch on each device to a different setting really works to power out the critters.
One of our devices will fill any single open room that is up to 7,000 sq. ft. but the walls, doors and soft surfaced dampen or muffle sound. Imagine listening to a TV or radio in the next room – you can hear it through the walls, but you lose a lot of the volume and details. We really recommend one device per room or area with a problem.
This device doesn’t have a “volume control” switch. This switch sets the device to emit in a higher or lower ultrasonic range — specifically preset to annoy that specific pest. The “High” setting is the upper frequency range that the pest can hear, while “Low” is the lower frequency range that the pest can hear.
We have spoken with many customers who’ve reported this kind of activity. What’s usually happening is that the sound is making the critter panic and be less cautious than normal while it tries to escape the sound or from your house/garage/kitchen/…
We can’t guarantee that it will work for every situation, but we do guarantee that we will do our best to help you get rid of your pests. If we cannot resolve your pest situation, you have a one-year money back guarantee.