ok. last night i was having a dispute with a customer. he is a special customer, not to say that they all are not. but he asked me how long it would take to do a cleanup at his house. and i asked him what he meant. said that every 2 years he power rakes his lawn. says that it is benefitial for the lawn, and he sees a difference. i said that he didnt have to thatch, and that he shouldnt thatch unless there is a thatch problem. he then went on to say that he picks up all the thatch, and mat. and that thatching is basically the same thing as aeration. maybe my head was in some other country while my professors said otherwise. but what do you guys think? am i wrong? or is he?