Searching for information relating to different treatment techniques against the varroa mite: Try the site below and download the mentioned text. http://www.biosecurity.govt.nz/pests-diseases/animals/varroa/guidelines/control.htm Should help fill in any gaps. I know that there are many others! Regards, Peter :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::