i have several wasps flying around my roof and downspouts each day but i don`t see a nest?
This is no surprise. In general, wasps will find these places attractive any time of year. As explained in our WASP CONTROL ARTICLE, they like sheltered spaces and voids for nest building so the sides of homes, up under soffits and roof lines, are perfect locations for them to live. But there are many homeowners who never see them during the summer and then in the fall they start to appear. So why only then?
Well, in the fall, many species of wasps are getting ready to overwinter or hibernate. As our article explains, they’ll crawl up into small cracks and crevices most any home has along shingle lines, around window frames and where soffits, gutters and downspouts meet. In these cases the homes don’t have nests; the wasps are simply foraging there to hibernate. And though most of these wasps will stay on the outside of the structure burrowing only deep enough to be protected through the winter, it’s quite common to have some go so far into the home they end up in living spaces. If left untreated, these homes will attract more and more wasps over the years and eventually there will be nesting as well as periodic activity inside during the winter.
To stop this behavior, there are two things you can do. The first is to dust with DRIONE. I use it around my home twice a year; once in the spring (to stop new nests from forming) and once in the fall (to stop invading perimeter pests from hibernating on my house). As our article explains, Drione lasts a long time and is highly repellent to any insect. It’s smokey like design enables it to filter up and into all routes of entry around treatment points making it highly effective when used around any structure. I find it’s all I need to do at these crucial entry points but for some people, a topical treatment is needed as well. For that the CYPERMETHRIN is well suited. After dusting with Drione, spraying these same areas with Cypermethrin should be considered if you still see them around. Fast acting and highly repellent to wasps, it will last up to a month and can be applied to any side of the home where you see activity.
Here are direct links to the information and products listed above:
Wasp Control Article: http://www.wasps.net/wasp-and-hornet-control