Well, Jen, maybe you should be looking for a new home for Bonnie and the fosters. By the way, fostering is a wonderful thing in my humble opinion, but it can lead to some issues at home...... Cats can sense a new cat.....even from the smell on your clothes etc. not just that they are "upstairs".... CATS CATS CATS...

Sterling is a handsome dude and I too would have a hard time rehoming him.

What about putting him on a leash in the house and then letting him know that it is a no-no when he decides to stray?

I really think a cat behaviorist is the answer. My good vet gave me the name of the person I was going to use with the Ti and Miley situation. I think she charged $75 for the visit. The form I was to fill out was all about inappropriate elimation issues...and then a tiny bit on aggression. Anyway, maybe a few phone calls to different vets will land you with a number to call. My guess is that the U of Pa Vet clinic/school should know someone within the general area. They usually come out to the house, and Allentown isn't that far from Phila area.

Good luck deary.

I cannot stand the smell of cat urine and know that you must be going through hell removing the smell. By the way, many years ago I had a foster cat that sprayed (female!!) and the only scent that would cover the cat urine smell what Ralph Loren Polo - men's cologne. Hehehehehehehe! Really.