I had this customer (last season) decide to feed his own lawn(4200 sq ft). He filled his spreader (set wide open with one bag of turf builder and off he went starting with a 8x30 foot strip on one side of the house. That is all he he could do as he ran out quickly . That one section grew 10-12" for 2 months. Amazing but it didn't burn. there are local applicators laying down so much grow juice lately that when I see those little flags I want to cry . Had to dump 3 accts last season because I could not cope . One lawn (12+") every week in july choked out my 36" side discharging. All needed to be mowed twice weekly but the owners weren't willing. One company in town started a 6 application a year program . What 's up with that? Whatever happened to four times a year? Easter, memorial day, labor day and holloween works well for me. Thanks for letting me vent.