Calgary Drain Cleaning Company Celebrates 250th Outstanding Review CALGARY, AB: SOS Drain Cleaning, a locally owned and operated provider of high-quality drain cleaning, clog removal, and plumbing services, is celebrating a milestone: The company has received its 250th Google review and maintains an overall rating of 4.9 out of 5 stars. A lot of effort and hard work has gone into achieving such an excellent customer reputation, and the whole SOS team could not be more proud.