I've been asked by a local landscaping company to do some applications for sooty mold on a few customers they have. I will be applying a mix of hort oil and imicloprid in late winter(late february or early march) to help "wash" and prevent future infestation. Am I on the right track? I haven't been asked to provide a price as long as I was in reason. I would just figure time + materials. I Don't do much shrub treatments so are most of you figuring shrub and lawn time to be the same cost? Would you charge by shrub...$5 for large and $3 for smaller?