Go to Sams or Costco, and buy 5 or 6 gallons of white vinegar to soak those rusty things in. It's cheap, and it works well. A 5 gallon bucket will be fine to use and let them sit in the vinegar. Some cheapo wire or plastic brushes from Harbor Freight to scrub them after you pull them out of the stinky vinegar. Hose them off with water, and then spray them with WD40 to keep them from rusting back so quickly. Doing all that will let you be able to see more of what you're doing. Tell your wife you are practicing root canals! :D