Do Electronic Pest Repellers Work on Roaches

Ultrasonic pest control devices emit high-frequency sounds, beyond the range of human hearing. … But while ultrasonic devices annoy the heck out of crickets, they have little repellant effect on roaches (or ants, spiders, mosquitos, and mice).

Do electronic roach repellents really work?

In summary, ultrasonic pest repellers emit high-frequency sounds that manufacturers claim reduce household pest infestation, but laboratory tests have shown that the majority of such devices do not work as advertised, in violation of FTC guidelines.

How do you get rid of roaches overnight?

For best results, combine equal parts borax and white table sugar. Dust the mixture any place you’ve seen roach activity. When the roaches consume the borax, it will dehydrate them and kill them rapidly.