So I cut this guys lawn on a lake in a nice neighborhood. He decided to use roundup in his flower beds then for some reason decided to use it on his lawn where he had some dandelions, he must have sprayed the whole bottle. I show up the next week and the whole front yard is dead(all brown), and some of his backyard is brown. His wife asked me to fix this. Is there a way to get it back into shape or is it matter of resodding or re-seeding? Thanks.