Teach your puppy the GENTLE command. I start with taking treats gently. After I have taught the pup that he can have the treat when he takes it gently, Good Gentle. Then I remind the puppy, GENTLE when I have a treat. Pretty soon I can substitute GENTLE for things I want her to be Gentle with .
I tell the girls "Gentle with my fingers."
It works with my girls, though I don't have scars from puppy biting either.
You might want to use the word IPE instead of OW or NO.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC