What NOT to do…had a zillion dandelions suddenly come up in my new grass one year. Went to Lowe’s and they suggested that I use Round Up and lightly spray EVERY ONE of them. Which I did. However, that afternoon a huge rainstorm came! The next day most of my grass was dead! Round Up is potent stuff. Lesson learned…watch the Weather Channel before you put anything on your grass! lol…also, use something besides Round Up for a Project like that!!