I had a lady ask me to bid 2 lawns for her. De-thatching and haul off only. Both properties are in the same neighborhood and are about 1/4 acre in size. The lawn looks OK but even I can see that it needs dethatching. I will have to rent a dethatcher to do the jobs. I do need the work right now but I don't want to get in over my head. Is there a typical average for a lawn dethatching for a lawn that's a 1/4 acre ? Or should I stick to cutting and Trimming? Thanks in advance for you help.