2 great tricks for cleaning up muffin tins! (also read somewhere else: spray easy off oven cleaner on a paper towel, wipe down muffin tin, place in plastic bag overnight, scrub with soap & water [also works for grill racks!])
The best oven cleaner! Cover bottom of oven with baking soda, then pour vinegar so it's all wet. Let sit around 20 minutes or so then wipe all of it out with damp cloth or sponge. I leave my oven door open too. After drying you may see some white residue, wipe again. Julie B said: Whoa! My oven looks like I've never used it! This tip worked perfectly! :)
Removing candle wax: Fill the jars with boiling, hot water; let the water cool overnight, and the next morning, the wax floated to the top and hardened. You can cut it into two pieces to remove. Use a sos pad to remove any remaining wax; wash and dry.