This is interesting - I just had this happen this week using a tealight warmer (4-1/2 inches tall) and el-cheapo tealight from Michael's. The FO was Apple Jack and Peel from KY Candle, the wax was IGI 4794 from Peak's - regular fluted tart (1 oz). Once the tart had melted, it smoked/steamed heavily until the scent became noticeably less strong (in about 1 to 1-1/2 hours). So I did a little research... the melt pool in the warmer was 250 degrees, and the FP of that particular FO is 147 degrees. I tried another tart (same batch of tarts) in my electric warmer - melt pool was right at 198 degrees, and scent lasted longer, although also burned off noticeably (steam/smoke). It seems to me that the low-FP FOs must burn their scent off quicker than those with FPs up around 200 degrees - when dealing with melt pools in this temperature range. Am I missing something else that would affect the dynamics of the tart/warmer thing? Surely I'm missing something - there must be a way to make tarts with low-FP oils that last longer than that one of mine did. Any enlightenment would be greatly appreciated. Thanks! Lori