I am in the lawn care business, for the most part strictly mowing. With the number of clients that we serve, I think it is important to stick with what we can handle and be the best at what we do. However, I have been seeing all of these winterizing threads on irrigation systems. I do not look to get into this business, but would like to have an understanding of what this is, what is involved, etc. so that I at least have a clue of what is going on in other areas of my clients lawns. Can anyone provide me with any insight? Thanks in advance - keep up all the good work fellas.