I just went to put something in the garage and at the back door of the garage is just concrete, about 6-8sq feet. Obviously that's where the dog likes to pee, because the ground is all green and it stinks of pee. It's the side next to our neighbours who don't like dogs. They can't be able to smell it yet as I know they'd be round straight away to complain about it.
So what can I use to clean that area?