I think that grandparents should spoil their grand kids. So I don't say anything when we're over at the inlaws and they offer dd a cookie. Who cares. It's once a week and we don't have that stuff in our house anyways. It's funny because mil will bake cookies from the freezer (gross) but is so proud, like she spent 3 hrs baking them from scratch. Lately, she's been sending home (or bringing over) 4-8 cookies "for later". We let dd eat one while mil is around, but after that we just toss the rest. We saw mil 3 times this week. That's over a dozen cookies trashed. I was thinking maybe I should say something next time. I know I'll have to do something soon, because my 2.5 yr old is going to start to notice that the extra cookies disappear!