Denatured alcohol can be found in the paint dept of your local wally world. 91% alcohol works OK, but is very sooty. yellow HEET works the best; my local wallyworld just had a sale on those too...like a 6pack for $5 or so..may $6. Yellow HEET would be my first choice, then denatured alcohol, with the 91% isopropyl alcohol being last. It doesnt burn as hot, and, again, is sooty, because of its water content.