I LOVE this park and drive from Scottsdale just so my pup can play here.
This park is huge, which is good considering I have a 130 lb ball of energy. I hardly ever see poo piles and there are buckets and water hoses everywhere. They even have a drinking fountain for the dogs and a kiddie pool to cool off after a rigorous run. 99% of the people that come here are great. You will run into the snobby one every now and then, but hey they calm down after a bit of slobber and dog hair clings to their fancy clothes.
There is a separate section for small dogs, but I see alot of them in the main big dog area too.
Over all great place!