I thought regular alcohol evaporates completely once it dries. Or so I've been told on here over a dozen times already. Honestly, so far I've been running hot well water through mine when they get to where theyre not working well.....generally on average every 8-10 days or so. I just cut on my water, let it get hot, rinse the atty well, blow it out, and let it drain upside down overnight. Knock on wood......I've been using the same 2 original ones that came with my kit since I bought it at the beginning of March......thumbs up on their present performance! Using my very first one right now......if they both tore up tonight, I couldn't say anything.....I've well gotten my moneys worth out of them and then some!
