I haven't timed it to see if we will get close to 24 hours burn time, but the aroma on it is excellent and definitely fills the room. That's been a problem with other aromatherapy candles that I've tried, which smell great in the box but don't do much when you light them. I've been using these candles with a relaxation program in preparation for childbirth, and lighting them every night before I go to bed. I ordered two more, one of which will go in my birthing bag. It is much better and more aromatic than candles double the price, and shipping was quick. No complaints at all.
It's really quite a good product. It's a quiet, soothing fragrance, not TOO strong or jarring. One suggestion: It would be great if the top of the jar was a non-heat-conductive material with a lip on it so the candle could rest on the jar lid without harming the surface below.
A little expensive, but my favorite candle. Doesn't burn smokey like the candle I have in the bathroom now, and has a nice yummy scent rather than flowery so I could convince the boyfriend to light it when he, ahem, made it necessary to do so =p