(YouTube link)
Craig Turner has a problem with neighborhood cats peeing on his property. They spray the house, doors, car, and worst of all, the air conditioning vents. I would just get a dog (which I did), but Turner constructed a homemade defense that involves cameras, motions sensors, and lots of planning. How successful was it? You'll have to watch the entire video to find out. Warning: urination. -via Metafilter
Damn outdoor cats.
And yes, cats are damn stubborn. We have an indoor cat. He's a good cat other than his wanting to crap all over the bathroom mats or towels we use when the mats are dirty (from him crapping on them).
No matter what we do or how many times he's gotten his nose rubbed in it, he still does it.
No mats or towels on the floor and he uses his litter box w/ no problem. Grrr
Clever and funny and topped off by a very apt message.