You guys may want to think about planting some naturally pest repelling plants outside your house.
Blue mound rue
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Ruta graveolens v. blue mound-- Rue (evergreen perennial sub-shrub)
Historical Use: The Roman writer Pliny reported that rue improved the eyesight of artists, antidoted poisons, and repelled insects, scorpions, and serpents. During the Black Plague, it was hung or carried by people to ward off the disease. Rue symbolized repentance; in the early Catholic church, stems of rue were used for sprinkling holy water. The leaves served as an early model for the suit of clubs in cards.
Medicinal Use: Rue alleviates gas pain and colic, improves appetite and digestion, and promotes menstruation. Large doses are toxic.
Other Uses: Household-- decorative; Fragrance.
link
http://www.norcrossws.org/norcross/H...dicinalbed.htm
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http://www.doityourself.com/stry/pla...al-insecticide
Tobbaco family is an insectiside, they used to use it along with other stuff way back when. Nicotina is part of the Tobacco plant family and ornamental. Though, if you have small kids and the like be careful as you can get nicotine through your fingers.
Do not eat if your pregnant
But pennyroyal mint is a natural pest repellent.
http://en.wikipedia.org/wiki/Pennyroyal
Basically do some googling or go to Integrated pest management and some of these remedies may help.