I don't know what this crock pot thing is, sounds interesting, but did you know about putting the tart burners in the freezer to pop out the wax? Where do you get the crock pot? Does Yankee sell it?
I also have Pumpkin Pie burning right now, next I'm using Spiced Pumpkin. OOOH, I love it, it smells so good! The fall and Christmas are my favorite times of the year for burning tarts, I just love all the scents! Especially the new Christmas scents that are out this year.
A good tip....last year after Christmas, the Yankee store in the mall had all the fall and Christmas tarts on sale for really cheap so I stocked up for this year, I haven't needed to buy any yet, I'm still burning them!