Before, during, and after
I finally used my Tarn-X and I have to say, it worked pretty well. It was especially impressive when I just dunked the silver item in the Tarn-X—much like the old commercial. On the downside, it smells terrible. Sort of like perms used to smell. Also, apparently you're supposed to be careful with this stuff.
CAUTION: Contains thiourea, sulfuric acid, corrosion inhibitors, and detergent. AVOID CONTACT WITH SKIN AND EYES.Also,
WARNING: This product contains thiourea, a chemical known to the state of California to cause cancer.Holy crap. Silly me, I thought the sulfuric acid sounded scary. I guess they meant it when they advised me to wear gloves. Oops.