Hi all - we have a fairly small back garden - part of it is a deck made out of Trex (fantastic stuff, by the way), part of it is an artificial grass putting green (otherwise known as the pooping green which reflects it's true usage), and gravel ground cover. The gravel is the problem - Sally and Rocky's preferred pee spot is right under one of the living room windows. I periodically sprinkle the area with diluted bleach to control the smell, but it doesn't work very well. We are considering a third dog, and would like to get a handle on this problem first. Any ideas/input would be much appreciated.