If so, and your dog urinates on it, how do you stop it smelling? Next door to me is a little cottage which is let out as a holiday cottage. It has a very small garden with some artificial grass. It's dog friendly and most visitors bring dogs and they are using the artificial grass as a toilet. My neighbour cleans the cottage between lets and also tends the garden for the owners. She remarked last week that the grass is starting to smell and she's rather worried as families with young children will be letting them play on the grass. Any ideas I can pass on?