Ascorbic acid salacylic acid or amino acid for plantar wart?

According to what I've read, all of these are worth a try. Lots of things can kill the virus that causes the wart -- acids and oils, etc. Often each individual wart will respond to a different cure. So try whichever one of these acids is most convenient or affordable. If it doesn't work, then try the others -- or try the 60 percent salicylic acid ointment that's supposed to be availabel over the counter.