When I get asked if my tarts can be used in their warmers the answer is, yes, of course, because there's no big secret or mystery about making a high-quality wax melt that performs well in all sorts of warmers. But I also go on to say that scentsy started out just like me - a couple of gals working in their basement, handpouring (I presume) a good product - until they sold their company to an entrepreneur who clearly likes to brag on his website about how huge the company has become and how many mechanical injection machines he now uses to pour the bars. I always say all that as sweetly as possible but my customers clearly get the message - they can purchase from what has become another run-of-the-mill over-priced international company or they can support me, a local handcrafter who has invested myself in each and every product I sell. And that message always works in my favor. I do give scentsy lots of credit for educating customers on how to use melts and melters, though. And thank God that they're so expensive.