I used one after I laid the sod last year during the late-spring season. I'm not sure what I need more, mush the high spots or raise the low spots. Some of the low spots go below the sidewalk and are too low to mow evenly. The high spots don't get scalped, it's just not a smooth yard. If you saw it, you'd think i'm being a lunatic since it's not going to be noticed by 99% of people.