I have only a handful of hives and need to take some some action this spring against tracheal mites. I have thought about trying Medhat Nassr's formic acid pads, but am uncertain about where to get small quantities of good quality formic acid. I have only half a dozen hives. How much would I need? Anyone have any suggestions on ready sources? I live in Maine. Also, I have considered as an alternative the menthol crystals and crisco "blue shop towel" method of tracheal mite control in Allen Dick's site. Is there any research on which is more effective? At least the menthol and crisco would be widely available and wouldn't carry quite the fear factor that working with acid does. Can someone help me out? Joe Rankin Stone Corner Farm New Sharon, Maine