I have a new kitten (girl) and a cat that is just over 1 year (neutered boy) all is fine as long as they are not near eachother. My older cat hisses at the kitten if she gets too close. The kitten has now decided to poo where my older cat normally jumps out of the window (the bathroom). It has happened twice today and i have bleached the area twice each time but i think she is doing this to mark the area? I have now closed the door.
What can i do? except inserting a cork or getting rid of her,