Has anyone tried an ultrasonic training device? PetAgree has one that is a remote (no collars) with a button to make a sound that dogs don't like and humans can't hear. Its supposed to stop barking, reinforce commands, etc... I'm pretty interested, but I wanted to see if anyone on here has tried them with any luck... I'm not interested in the bark activated ones because I don't want to completely inhibit the barking for security reasons, just the meaningless leaf-floating-by-the-window barking
. Thanks!