Reply To: 99% of homes in Ontario have working smoke alarms! HOME › Forums › Reply To: 99% of homes in Ontario have working smoke alarms! January 28, 2016 at 1:06 pm #2116 Darren ZettlerParticipant We need a LIKE button for topics and posts. I LIKE the info here and the discussion. I find the 99% number really hard to believe just based on professional experience. Census information is probably full (some margin of error 🙂 of incorrect information.