So I made an 8 oz Mason jar candle using joy wax from NG. I auded pink sugar cookies from Candle Science as the fragrance oil. I used the temps posted on NG to add fo, and to pur. Waiting a week to test. Also sold 2 to my neighbor. Cold throw was good. Hot throw was excellent. I stood there while my neighbor burned the candle and scent was awesome. I used mine in my bedroom which is pretty big. Again scent was awesome. Here comes the issue. As the candle gets used up, there is so much soot, it blackened the glass. I stopped using mine. Neighbor called me today and tells me I have to give you some feedback on your candle. It almost caught my house in fire. I walked over and got the candle. So he burns them for hours on end. Unsure if he was burning it were there is a draft or not. Then I look at the candle from the side and see that he had about 1/4 of wax left. I show him the care instructions underneath the candle and advise him to not leave the candle unattended, ever. Also to discontinue to use the candle when there is only 1/4 left. There was melted wax (pool) of more than 1/4 but I stuck my finder and side of candle shows little left. So whet went wrong? Also got insurance today. Who would be responsible if his place catches on fire? Please help. Thanks