Greensummer, I see from your profile you have been in business for six months. Are you a member of any hort organizations? Do you contribute to the industry or are you a scrub.
If you ahve been involved in the industry here for any length of time you will know the complexeties of the issues and that lawn spraying is on the way out. If chemicals are so safe why are more and more of the makers taking them off the market.
Set yourself apart from the pack, go organic.