Our lawns had not been treated in a few years so had lots of weeds and hard, thin patches, especially in the shade of a fir tree. Didn't know what it needed, so owner came out within a few days and recommended aeration, liming around the fir tree needles, and their own organic fertilizer. Have only had one treatment so far, but it already is much more lush and weed resistant even under the fir tree, which I'm surprised to see. I did put down some new seed after the treatment and that helped too. Very friendly service.