My wife (without my permission) agreed to look after two moggies belonging to a friend. One is a cute female about 10 weeks old. The other is a 6 month old tom. Even though he has had hit bits nipped it has not stopped him marking his territory.

Little bugger got into my study room, decided it was a male only room, mine, and decided to mark it has his!

Any more scent marking of my room will see the said offender using up all 9 lives in one go and being taken to the taxidermist to be stuffed as a draft excluder.

What's the best way of getting rid of Eau de Tom ?