If you do a search, you'll find 1000 threads on getting rid of them. i'd take a look for details. this is probably why you didn't get a quicker response.
the simple answer to your question is yes. do your homework before you dose, as they are toxic when they die and it can kill livestock if you have a lot of them. post pics and ask a lot of questions before you start or the cure may be worse than the ailment.
good luck...