My child is beginning to act out because of his grandmother

Hello everyone!so, my son spends Sunday's and Monday's with his grandmother, and he sees her pretty often. she is a very sweet woman, and she doesn't physically disiplince the child..or disiplince him at all. so when we get him back, he is outright defiant and I'm trying to create a break where when he is at his grandmother's house, he can do whatever he wants, but when he is with us, there are rules. I don't ever hit him, and neither does his mother, so we're looking for a new alternative because timeout isn't working either. he just turned 3 btw. thanks! via /r/Parenting http://ift.tt/2vwU6Lg