Bests & Worsts Reviews from Amazon

I Have been using these candles in my "hippy heater" in my bedroom at night for about a year now. I burn 4 at a time and they put off a good amount of heat in there!! They typically burn for a solid 6 hours sometimes more. I start them before I go to bed and depending on when I wake up, sometimes they're still burning!! They burn so clean, not soot or smoke. I keep reordering these candles. Won't trust anything else. I've attached photos of the heater including the interior where you can see no black soot.