If you haven't been to this zoo, or haven't been in a couple of years, you MUST go!! The Zoo has been remodeling and adding new attractions! We went to see the new Elephant yard and it is amazing!!!! Honestly, it is worth the price of admission just to see this! The Oregon Zoo is the best in the country!...
What is Ultrasonic Cleaning Technology? Ultrasonic cleaning technology is high frequency sound waves creating a phenomenon in a fluid called cavitating action, or cavitations. Cavitations, the superheated bursting of bubbles in a fluid, are what make ultrasonic cleaning 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.tudies designed to investigate the efficacy of ultrasonic pest repellents have shown mixed results. One extensive test performed by Kansas State University in 2002 found that the devices were effective at repelling some insects, such as crickets, but the same devices had little effect on cockroaches.