Used this as my first fertilizer treatment this year, just after the grass came out of dormancy. Within a week or two, our grass was the deepest green I had ever seen in a yard, almost the color of our evergreen trees. The grass has filled in crazy thick and feels almost like walking on carpet. Spread easily with a broadcast spreader and no filler (that I could see) compared to cheap fertilizers. I will definitely buy this product again for next year.