Hey everybody. I have an idea that I'm just trying to get some feedback on and consult the experts here on UAV applications. Im in the cleaning and restoration business and a common challenge we face all the time is applying powdered zinc to the ridge lines on roofs for moss control. Most of the time, its not a big deal to get a guy up on the roof with a ladder and get it done but there is a significant number of houses were the pitch/steepness of the roof makes it a huge safety hazard to send o