Over the years I've heard a lot about molasses, but no one talks about using vinegar. Ive been using vinegar for years and it works great. Usually it only takes a couple of days to work. What I've heard about molasses, is that it usually takes weeks. I was at first skeptical, but tried putting some parts in a gallon can and put the lid on for several days. When I pulled them out, I though what a joke, so I washed them off with the pressure nozzle from a garden hose to get the vinegar off the parts and the rust blew off in sheets. Wow, it worked. If I hadnt of done that, you wouldnt be able tell, if it would even work. Anyway I have graduated up to a covered plastic locker, that you can buy a many stores. It is about 2x3x30 tall that I have filled with vinegar (I think that it holds about 30 gallons). I buy vinegar at Costco for about $1.30 gallon (at least the last time I bought some). Ive had this locker filled with vinegar for about 10 years and just add some once in a while to fill the tank back up.