Quote Originally Posted by DougPaul View Post

Deer ticks can be active any time the temps are above ~30F (~40F according to another source)--the time of year does not matter. I started treating my clothing several weeks ago.

Given how warm this winter has been in the Boston suburbs, I probably should have been treating my clothing all winter...

We've been finding them on Cape Ann every time the weather got above freezing all winter. There is no "season," if it's warm enough they are out.