The only reason I stopped puttin butts in the oven is cause of a bad experience a couple days later. I agree with the concept though, why waste fuel with them foiled - they ain't gettin smoke thru the foil! Anyway, I didn't think to put pans under the foiled butts in the oven. Also didn't have rack space - 4 butts 2 per rack, only 2 racks. Drippins from the butts flooded the oven, about 1/4 inch thick pool on the whole bottom. 2 days later, it had dried a little. Ready for bed, set the oven to auto clean, headed to bed. 1/2 hour later, smoke detectors are screaming, my alarm company is calling, my eyes are burning. Now this was spring, when most neighbors slept with windows open, so after opening every window in the house started waking them up. Alarm company said they could not turn off the alarms, just gotta clear the smoke. Now I can't see the length of the hallway from the front door, I was standing there flappin the door trying to create a breeze. Blah blah blah. I finish my butts in the smoker now! GREAT lookin bark on your butts!!!!