Hallo Ari, I have tried the liquid Oxalic Acid also for a few years and had great success with it. There I a total new form of OA treatment on a website from an Oxalic Acid Vaporizer manufacturer. The Acid is in a strip and worked over a period of 5 weeks. I heard from a friend it should be working with a great result. I ordered a few bags, but I’m on a waiting list for a week or so. There is so a big demand they can’t fabricate fast enough the strips. I give you the site just in case you like to try this form also. http://de.geocities.com/vaporizerklaus/ You can find the strips next under the Vaporizers. Alfred :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::