What happens at grandma's stays at grandma's?

Jess, I understand what you are saying. But if you never plan to leave your ds with the gps, then you have no problem, do you?

I get that you would prefer if they would simply "follow your lead." But you can't force that to happen. You can talk to them about it once or twice, I suppose. Maybe they will say "okay," that they'll respect your rules when they watch your child. But if they argue or brush off your concerns, then you'll know you can't leave ds with them. In that case, please make other childminding arrangements when you need it and just have family visits with the gps.

I have to wary of what to use as treats for my DGS2.
He has various allegies so I have to read all the lables in the house.

He does like snacking on grapes, tomatoes and strawberries all of which need chopping up to avoid choking.

I have often said "don't tell Mummy" when mummy is there it is a sort of benign conspiracy.

I would not seriously go against her parents wishes and DD is fairly laid back anyway.