We're getting ready to do our "Special" for core aeration and de-thatching, but I have limited experience with the latter. Does anyone have any helpful advice on how to price and properly dethatch? We plan on renting each machine; the power rake (I think thats what its called) has a bag on it so it should eliminate some of the raking right? Last year, we just raked it up with a rake, but thats way too time consuming. Pricing is what has me confused. Dethatching is always more costly than aerating correct?