Anyone have any suggestions about how to handle my 18 month old and 4 year old? It's reaching a point where we can't have them in the same room any more due to the constant fighting. They just sit there screaming at each other. They each wind up the other on purpose. It goes on all day. I can't even be in the house with them for more than 10 minutes. About to leave the younger one with my husband and take the older one out as my head feels like it's going to split.