Those kind of dog whistles that humans can't hear but supposely dogs
can, they don't work.Except for one paticular dog whistle by the name of
Ace, maybe it is Acme, something like that.
I once asked a guy at Animal Health Products (that's where I buy Pro Pac
dog food for doggy) store about those whistles.He told me about them.He
said the price of those dog whistles went up to thirty dollars and
people stopped buying them, so they don't sell them anymore.
cuhulin