Vienna is now being invaded by the brown tail moth which is not only a serious forest pest, but also a human health concern. For anyone who has experienced the rash caused by the exposure to the hairs of the caterpillars it is really uncomfortable and can cause serious problems. There are some precautions folks should take now and some methods to manage the population at other times of the year.
Follow this link to important information from the Maine Forest Service.
Particularly there is a very comprehensive list of frequently asked questions that should provide lots of answers to questions.