I have collected quite a few ideas from others who renovate lawns and need a few more. 1. Kill and till. - broadcast app of pesticides/ lot of work to till 2. 3 way herbicide, wait 2 weeks, topdress/overseed 3. Scrape off lawn with bobcat, put down sod. 4. Kill w/ roundup, hit again after a week. scalp/aerate/seed. I am looking for the best method (Pacific north-west) and best time, to turn a lawn that is 40 % weeds or worse into a thing of beauty.