We have purchase 270 to 300 sensors per month for clients in our care homes in the past 11 months we have attempted to file complaints and request assistance with sensors that had no adhesive the error and multiple errors messages once we contacted the customer neglect them for having three clients hospitalized because of the failure of the Libre we spoke to Health Canada and Doctors the Libre is a unsafe Libre has many serioius issuesious i User's recommendation: Use the Dexcom syst.