ah Early kids I hear your pain.

Hamish retreats to his room when things get to much, it has and always will be his sanctuary. The problem is Lachlan can now open his door and will go in there constantly just to touch things.
This drives Hamish crazy, he hates his things being touched, he hates anyone in his room unless he has invited them. The door to his room is always closed whether he is in there or not but Lachie opens it all the time..
I have been thinking of how to deal with this but have been coming up empty......any ideas anyone