In the next couple of days I will be doing some overseeding on a couple of properties. One of them has a fairly thick layer of thatch buildup from last summers severe drought in N.W Ohio. Normally I am content to simply do a core aeration followed by an overseeding treatment. I try to avoid dethatching as it seems to really tear the lawn up.... it seemds like more and more literature suggests avoiding dethatching. I see things such as: "aerating will allow for air and water to penetrate the thatch which will break it down...." and "dethatching may do ore harm than good..." My bottom line is that I want a top notch looking lawn come next spring... Any thoughts?