Most of the problems we have in daycare are because of how the parents are doing things. It isn't always that they are doing it wrong but just in a way that is not conducive to group care. Some of my rules are because of this such as no outside toys period and I would have handed the toy back to mom at the door even while child screamed and told mom that next time she takes it away and leaves it in the car. Kids not expected to sit at the table to eat meals and allowed to run around grazing, not going to bed at a consistent time, etc.

Kids can learn two sets of rules but it takes time and usually leaves the caregiver feeling like a real mean person even if you know you are doing a good thing for the child in the long run.

If you have been working with the family and have given them ideas but they don't seem to get it then for sure pointing things out when you see them should help them get what you are saying but don't expect it to go over well as no one likes to be told they are doing it wrong which in essence that is what we are doing.