I wish I could do 4-1/2 stars but I choose 5. Mainly, because I can't be around chemical products at all and this is a great alternative for me. This year I added the corn gluten fertiziler in January (N. California) rather than March and it has stopped the crab grass that I have been fighting the last couple years. I do however have a lot of clover and a couple dandelions. For me though, the luscious green lawn I get is great! IF you are looking for a quick fix, stick with the chemical products that create quick growth. This one may take twice as long, but gives better grass roots and stronger grass if you ask me. I love it! (kept for a few random clover etc mentioned)