A friend of mine soaked some for 24 hours in water and limeaway and they still lit. Thanks for the AR15 forum reminder. I didn't think of that.Rusty, if I were you, I'd try washing a few in soap and water or something. I really don't know what'd work. You might try posting this on the AR15 forum. I'm sure there's a lot more "exposure" to .223/5.56 rounds there.