I am strictly in the business of mow, trim, and blow. I have a customer who has been told he has "summer patch" in his lawn. I have pointed these brown patches out to him each of the last 3 years and this month he has some people give him advice. He has had three profession services come over and give him conflicting recommendations. I told him I know nothing but will as you guys for a recommendation. We are in Central Michigan. Should he treat with fungus killer and over seed now, or should he treat with fungus killer now and wait till spring to seed, or should he wait till spring to do both????