My guess is to try another scent first. Also, she is getting 14hr from a 1.4oz piece of wax. So you need to make sure if you're testing to achieve that it needs to be the same. I do think a wax blend is going to be stronger than using anything straight from the box ALONE. I think the pillar blend waxes need some container wax mixed. That's my next experiment. I am waiting on my order to get here this week. I am testing 0.5oz and approx 1oz pieces of wax when I burn. There are too many variables you could actually factor in: what kind of burner you are using, how many watts it is, etc. (and MUCH more).