Do Pest Repellers Affect Hamsters. As a pet owner, you should be aware of the effects and negative impacts of ultrasonic pest repellents before deciding on whether to use them or not. An even bigger concern is the effect the noises emitted by these products could have on humans and other types of mammals.
These devices have even been known to affect some reptiles. If your family has rabbits, guinea pigs, hamsters or other small pets, ultrasonic pest repellers can cause them varying degrees of distress depending on how close they are to the device. Some rodents can hear frequencies up to just below 100khz, so keep this in mind when purchasing these devices — the frequency should be higher than your pet can hear.