You should be able to remove the grease and grime with a scrubber and very little effort. You can dilute the ammonia if you wish, but I would not dilute it any more than half water and half ammonia or the results won't be what you are needing.
If you feel that there is not enough of the ammonia covering the rack, you can very carefully turn the bag and rack over, but beware of poking holes in the bag with the oven rack.
By missysmom from Nokomis, AL
By Patricia from Lexington, NC
By coville123 from Brockville, Ontario
Get yourself a can of Easy Off for cold oven cleaning. Have a couple of big 55 gallon trash bags and a stack of old newspapers. This will work on oven racks and grill racks, too.
Lay out at least four layers of newspaper big enough for one rack to fit on with a four inch border. Put your rack on the papers and spray to cover the rack completely, turn rack over and spray second side. Turn up the edges and cover with four layers of paper, then put them in the big trash bag. Continue until all are done and in the bag. Fold the top of the bag over, and let them lay there.
After the time noted on the can open the bag and take out the racks. Wipe down with a ball of crumpled foil. Rinse and replace in your oven!
Source: Tried and true from the women in the family.
By Maile from Onalaska, WA
How do you clean oven racks? I have a very small sink and the racks will not fit. I heard that if I clean them in the bath tub the gunk that you scrub off might clog the drain. Can anyone advise on a better way to clean oven racks?
If you are concerned about the gunk I would scrap off any chunks you could first and/or get one of those mesh drain strainers they sell to keep the hair from going down the drain. The last one I bought was under 2 dollars. And if you were really worried about it you could do the baking soda + vinegar trick on the drain after you are done.
You could purchase a large plastic bin to soak your racks in. We used to have one outside for our BBQ grill racks. But it takes some searching to find the right size, plus it is extra cost and you then have to find somewhere to store it. (09/09/2008)
How can I clean filthy oven racks without harsh chemicals?