Used to use this for fire starter back when I was a Boy Scout. (That would have been just after fire was invented .;-) Any kind of spark will light it and if memory serves we even got a magnifing glass and the sun to work, but the steel wool must be one of the finer grades to work right. We used to use a ping-pong ball size wad of the stuff to get a small campfire going. Blow on it after it is lit to enhance the burn. This is rapid oxidation of iron (rust) in action! I believe it should work wet, but not sure. Good luck!