I have a bit of a weird situation. See, we have two cats. TC is 13, and getting a little creaky in her old age. Baron is 8, tubby, and acts every inch his name. He also has a history of peeing where he's not supposed to. We've never been able to identify why exactly he does it; it's not UTI, it's not stress... But someone, most likely him, has been peeing on our entry hall mat. This has been happening every night for the past week or so, even after cleaning it with everything under the sun and even replacing the mat. I would like to set up a web cam to see who exactly is doing it, and when. That way if we need to medicate someone I'm not medicating the wrong cat. I have a Mac Mini with Snow Leopard, and a web cam. Does anyone have a recommendation for an app to help me solve this?