Are marking and huge piddle spots the same thing? That is an honest question because we never had that problem before we brought Casey home. The two of them both wandered around the back yard together doing a little piddle here and a little piddle there. Peanut is still a very good boy overall. We figure it is just his way of reminding us that he is not happy having a brother or sister. It is not often that he does it and we still cuddle him on our laps and talk to him and scritch him. I wish that when he does piddle in the house, he would use Teddy's pee pad instead but that is okay. All of our floors are laminate so we just wipe it up then spray it with the hardwood floor special odor eliminator we got at Petsmart. Peanut finally started playing with Teddy today after a little over a week so we know that he is warming up to his little brother.