When's the last time you checked under the "hood" of your lawn? Thatch, the layer of organic debris under the lawn's surface, is a normal component of a healthy lawn, but if it gets too thick, it can ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Mr. Fix It Lou Manfredini joins WGN Morning ...