We had The Pest Control Guy out to spray for Box Elders, which are completely gone, for now. We had them sprayed last year, with the same results, but they did come back later in the summer. Don't think there is any way to help that, so if need be, we will have them back to spray again so we can have a Box Elder free summer in our yard and on the deck! Our technician also noticed that we have Voles, and placed some boxes around the yard. Hopefully it helps, as they sure make a mess of the lawn. We won't use anyone else!!! Thanks for the great service.