so I just got a job from one of my clients to "renovate" his lawn. This is like a $1,000,000 property. The house switched owners and in the process the lawn was not properly cared for and the geese (waterfront property) destroyed the grass. my solution is to dethatch with a power dethatcher and then slice-seed. This is the first time I have ever used this equipment... any tips I should know? Also what is the best time to do this. I know fall is good, but what time... like early september or late september etc? Can I get away with doing it the last week of August? The property has irrigation. BTW I am in southern NH. any help is appreciated. Thanks!!