MOUSE_OVER work when touching actual object instead of surrounding box?

Is there any way of making the MOUSE_OVER of an object not work until touching the actual object instead of the square box that’s around it? I have a bunch of stuff packed together and there are certain objects that cannot be detected due to others pretty much enclosing it with it’s surrounding box. If you need further explanation because this is not clear enough just ask me and I will try to explain further.