Protect Your Irrigation System with Sprinkler Blowouts in Lethbridge – SOS Exterior As temperatures in Lethbridge begin to drop, preparing your sprinkler system is one of the most important steps in protecting your landscape investment. A professional sprinkler blowout with SOS Exterior ensures that every drop of water is cleared from your irrigation lines, valves, and sprinkler heads before freezing weather sets in. read more: https://sos-exteriors.ca/sprinkler-blow-out-maintenance