If Bermuda seed is to be used - My suggestion at min is - Spray with RU - Ensure everything is dead - Rake off old dead debris. Rent Slit seeder from rental store. Plant seed. Pray.
10% of your customers are 90% of the problem.
You may think the grass is GREENER on the other side, but if you take the time to water your own grass would be just as GREEN[/COLOR].