Florida Rust calculates your rust control service prices as outlined below:  80% the amount of rust preventative your irrigation system will use.  This is determined by the amount of hours your irrigation system runs and your iron count. 10% the service schedule; how often the property will need to be serviced by a technician.  Weekly, bi-weekly, or monthly. 10% the extent of service needed to remove the rust build up. I.e. heavy landscaping, multiple buildings, years of build-up. MAKING FLORIDA BEAUTIFUL ONE PROPERTY AT A TIME!