agreed with all the others...one of the signs we picked up on Wobble was him peeing all over the place and we have just found out he is diabetic. If you can't rule out the culprit...check them all over for signs of weight loss, excessive drinking, lack of drinking, loss/gain of appitite or lethargy?
Good Luck!

(p.s......I have found that TCP or other antiseptic disinfectant works wonders when getting the smell out of carpets or other flooring.)