It’s well known that many animals are particularly sensitive to high-frequency sounds that humans can’t hear. Many commercial pest repellers based on this principle are available, most of them ...

In the summer of 1876, in a workshop on the outskirts of London, Francis Galton was busy fashioning brass tubing into an ultrasonic whistle. This unique sliding whistle would produce high-pitched ...

Proper training is vital to responsible dog ownership. It also makes the experience more enjoyable for both you and your furry family member. Dog whistles are fantastic tools that can make the ...

"My son, Billy, picked up this silent dog whistle at a pet supply store." My friend George held out his hand to show me a small shiny metal whistle and then he continued, "Billy said that he was told ...