Q U I C K T I P: Cleaning Oven Racks To remove the cooked on gunk from oven racks without scrubbing, take a dark large trash bag, add 1 cup ammonia, place the racks inside, tie up and place in the sun for a few hours. The gunk will soften and be easily wiped off. Check out more tips in our new Virtual Tipbook! http://www.thefamilycorner.com/cgi-bin/tips.cgi