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Mary writes

I am in Northwest Ontario, Canada right now. We have cluster flies and lady bugs everywhere. Is it best to spray now so we don't have them in the spring? Or treat in the spring?

Answer:

Cluster Fly eggs are laid singly in the summer and deposited in to cracks in the soil, where they will hatch within three days. The maggots that emerge then embed themselves inside of an earthworm to complete the larval stage, which lasts between 13 to 22 days. The pupal stage lasts between 11 to 14 days. This process will repeat itself to four generations each summer. In early summer before they enter the structure, you should treat with a pyrethroid based insecticide and exclude them by sealing any cracks and crevices. We suggest dusting the voids and installing a fly light inside the home.Use a vacuum hose to remove single flies or clusters of adult flies as they appear in attics, basements, crawlspaces, or false ceilings.   Ladybugs usually appear in mass numbers in late fall or winter, flying or crawling inside a home or garage. This congregating behavior begins in mid October and is initiated by the first cold weather day that is followed by slightly warmer temperatures. During this warmer period, lady bugs begin gathering by hundreds of thousands around homes and outside tall, light-colored buildings where they may appear first on the southwest side facing wooded areas. We suggest treating on the outside with a pyrethroid insecticide, sealing off entry points, dusting in voids and vacuuming those that have entered. Please click on the links below for information on treating for both of these insects.   http://www.domyownpestcontrol.com/how-to-get-rid-of-cluster-flies-a-227.html http://www.domyownpestcontrol.com/lady-bug-pest-control-a-290.html

Answer last updated on: 10/16/2013

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