From a distance my lawn looks great, however when I'm mowing I can see all the thatch on my lawn. I rake the lawn several times a year, yet I still get thatch. I wanted to know if anyone had any tips on: 1. How to get rid of thatch (other than raking). and 2. How to keep it from coming back. I live in Chicago and have Kentucky Blue. I bag the grass when I mow. Thanks in advance for all your help!