I started my business last year ... just getting started. What are the laws ( is there somewhere I can read them?) in Michigan for applying fertilizer and insect control. Is it legal to apply what you would normally buy at home depot without a license ( example - scotts products )? Is liguid fertilizing the best way to go? If so why? Where would you buy the fertilizer in bulk to get best price (bagged)? Are there laws on storage? I know it seems like a lot of questions ... can you help?