If you are going to use alodine, take care not to absorb any into yourself, and if you are on a cattle place be careful with your rinse water disposal so you don't get hung out to dry for contamination. In 1995 I had a chemical contamination, the source was fairly easily identified, but we still couldn't sell another beast for 9 months.
Also remove all the printing off the sheets with GP thinners and do all your de-burring before applying the alodine, otherwise you will be handling your treated parts too much, and be filing off a lot of your treatment.