For people that spread fertilizer in Michigan: I did a search on here about appling fertilizer, but i am really confused. 1. Do you need a license to apply ONLY fertilizer? 2. From what i gathered from reading on Lawnsite is that i don't need a license to apply fertilizer, but i need one to spread pesticides... correct? 3. If i need a license to spread fertilizer, where is a place online to read about that information? Thank-you!