Had them come out and spray for wasps/hornets a month ago and noticed a small area still infested, I called them and they told me they can come back out again but only for $75 more dollars.

Logan Extermination sprayed my home lawn last Fall (October 2015) for a bothersome thistle problem. At the time, I was told the protection was under warranty. The thistle is back this spring, and Logan Extermination informed me that I was not protected against thistle already established in the lawn. I guess their position is, If I have thistle emerging this Spring, it was not covered by their warranty. Not sure what my $150 bought.