We were using Pool Guy when NPS referred us to Cody specifically. He came out on a holiday to talk openly about our pool, not generic it was all our pool. I can't imagine using anyone else. lance is our tech and I love him, I woukd leave Cody or Lance alone in my home anyway. They know chemicals and we randomly take our water samples in to be tested and since using Desert Diamond we no longer have to add additional chemicals. He is worth every penny!