Dog Whisperer Wannabe

I want to be a "Dog Whisperer". Do you watch the show? The man is amazing. We watch faithfully and even tape shows so we can watch them again and again. We have accomplished several of his teachings with our dogs. The walking on the leash, waiting to eat after food is presented...we have those down good. But the "Shhhh" continues to elude us. Caesar says you can use any word that works for you...you just have to be consistent. But, so far, no word seems to work with Einstein, Gracie and Pink. So, we will keep trying...and hopefully we will figure out the "Shhhh". If you have Dog Whisperer success stories to share, please write me.