Just wondering if anyone actually uses uf type fert on residential customers lawns. I can see doing it to your own lawn but not to a customers. There to expensive(initially) and after long term use you may only have to apply one uf app per year to maintain a healthy turf. Yes, it is environmentally friendly but chances are you won't have the customer long enough to see the benefits. Perfect for Golf Course. I hope I didn't touch a nerve, I was just curious!