“ Originally Posted by Ketil 
”
Been having fun with this one. Odd thing is there's not a frequency that seems to bother my dog or cats.
However, I discovered that 12,000 Hertz makes my wife's teeth ache.
16,000 bugs the crap out of my teenage son and neither me nor my wife can hear it. So, guess what frequency I've been playing with? :D
hahahahahahah thats great :) your son is going to love you hahahahaha you should train him that way..... many dogs are trained with dog whistles so why not sons :)