DS is 3 and the scary monsters hang about his light.

We've had lot's of discussions about them monsters. I ask him if they are scary monsters or friendly monsters, if he says he hasn't asked I tell him to ask and if they are scary monsters that he can tell them to go away and that they have to. That monsters can only stay if they have his permission. If they are friendly monsters then they can stay cause they look after him and help protect him from the scary monsters.

Sometimes I go in with the water spray bottle and pretend it has special potion in it so they can't come around, other times I get him to visualise that he is surrounded by white light and that means there is no room for scary monsters... whatever works