Hey Durka,
You might want to think twice about the cayanne pepper - I was prepared to use that in my flower beds to contend with the neighborhood cats... until one of my neighbors told me that cats have been known to claw their own eyes out if they get that stuff in their eyes. Don't know if that's true or not, never heard it before, but it was enough to stop me from doing it.
Yikes, thats a little too close to torture I think. I wouldn't doubt it though, I got a ride him with a crazy cabby a while ago who kept a bottle of homemade pepperspray with him, told me it was 10x stronger then the tsuff the cops use.