Cat Peeing Everywhere Since Getting New KittenMy grandma has a cat that she has had for years. She's fixed and is also an outside cat. Recently I adopted a kitten for my daughters. It was going all right at first; my grandma's cat would just hiss at my kitten and just avoid her when they are both inside. I thought we were doing things right, but now my grandma's cat is peeing everywhere upstairs, on couches, floors, clothes, everything. I don't know what to do. Any advice please?