Dog in Apartment

I had a few friends over tonight. One asked if he could bring his new puppy to my apartment. My original thought was no way. Then I said that he could and we would leave him in the kitchen. Naturally the puppy busted through the boxes barricade and was all over my apartment. Whatever. Then the puppy decides to pee on my carpet less than a foot away from the tiled floor a few minutes before my friend left. I used to love dogs. I begged my parents to get me one. Now I'm such a germaphobe that I don't like them around. That's what I get for allowing the dog to come over.