A: Ultrasound is a frequency of sound too high to be heard by humans. Ultrasound is reflected by hard surfaces and absorbed by soft surfaces. The DigiMax® sweeps a frequency of 32-62 kHz. Rodents find this sound irritating and will avoid it if possible. The non-repetitive frequency levels cause additional discomfort and do not allow the rodent to become habituated to the sound.

For additional effectiveness, the loudest spike in sound replicates the sound of a dominant male rodent. Rodents are very territorial and will constantly fight to establish dominance. The sound of a dominant rodent will discourage others from inhabiting a territory.

It is important to note that ultrasonic frequencies do not travel between walls. So for the most effective rodent control, ultrasonic units need to be placed in multiple rooms.

A: Ultrasound can repel rodents by subjecting them to intense auditory stress. This method is a classic animal behavior modification technique.

Unlike traps and poisons, ultrasound does not kill rodents. The DigiMax® has the ability to provide long-term reductions in rodent populations by creating a “rodent-unfriendly” environment that discourages rodent infestations.

A: Some insect species can produce or perceive sound in ultrasonic frequencies and are affected by high-frequency sound. That is not to say that it can effectively repel them or control them.

There has been little true scientific research to determine if ultrasonic sound generators could produce effective insect control results. You may find that some insects seem to respond to ultrasound while others are oblivious to it. The DigiMax® should not be used for insect pest control.

We believe that it is improper for any company to make specific insect claims unless backed by validated scientific studies.

A: Ultrasound Alone to Control Infestation: The most common repellent mistake is using ultrasound units alone to control an established infestation. Simply plugging in a DigiMax® will not send rodents running for the door and out into cold winter temperatures if there is still sufficient food & shelter in your home or shed. It is important to also incorporate sanitation and exclusion techniques. Additionally, traps and baits should be used in conjunction with Ultrasonic devices.

Not Enough Units are Used: Ultrasound does not travel through walls so it is important to place 1 in each room.

Poor Placement: Ultrasound is reflected by hard surfaces and absorbed by soft surfaces. Placement behind a couch will not allow waves to bounce around freely, causing a hostile sound environment.