Box Elder Bugs - Knowledgebase Question

Plymouth, MN
Avatar for cswaggs
Question by cswaggs
April 13, 2007
I have used detergent with water in a sprayer but have not gotten ahead of these pests. How can I kill them and leave a residue that will continue to kill. They have been in my house all winter.

Answer from NGA
April 13, 2007
Once boxelder bugs have become established in the home, there aren't a lot of treatment options. The easiest way to remove boxelder bugs, once they are indoors, is with a vacuum cleaner.

Prevention is your first line of defense and this is best done in the fall. Sealing box elder bugs out by caulking cracks and around utility service openings, fixing broken window screens and door jams, plugging cracks in the foundation or roof as well as similar exclusion-type activities will help prevent the pests from entering in the first place.

To help prevent boxelder bugs, cluster flies, lady bugs and similar pests from entering in the fall, use fast-acting syntehtic pyrethroids outdoors: Demon WP, or Demand SC, Tempo WP or Tempo SC are recommended.

Spray around eaves, attic vents, windows, doors, under-fascia lips, soffits, siding(including under lips) and any other possible points of entry, concentrating on the south and the southwest sides.

Hope this information helps!

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