Sorry no help here- just sympathy and understanding- we have a three year old male- he isnt desexed, and he pee's everywhere and anywhere he wants!! He isnt allowed inside anymore for that reason, but every now and then he gives me the puppy dog eyes and i give in and let him in- only to be dispointed when i find another "marking"!!!

I do know when you clean it- its good not to use anything with amonia in it- as the dog smells the amonia as another dogs wee and will keep returning to the same spot to cover up the amonia smell, Washing powder is good- just mix it with some water!

Good luck with it!!