We use a completely people, child and pet friendly pest control item called Diatomaceous Earth (DE). It is a food-grade form of Fossil Shell Flour that kills any hard shelled critters physically, not chemically. The ground fossil shells are microscopic razors to the insects and cut through their shells and cause them to dessicate/dehydrate. It comes in a bag of the powder, just like baby powder and you dust your carpets, 'puff' behind all cabinets, under cabinetry, around pipe openings, along the outside and inside of windows...anywhere they could be living or getting in. Shortly you will be pest free! The only precaution is to make sure you don't get the powder/dust into your lungs when treating the house, yard, etc so it's recommeded to wear a dust-mask when dusting. The stuff is safe and sworks awesome, and is cheap! I bought mine at dirtworks.com and spent about $16 and have enough to last me years! You only need a few ounces to treat an entire home/yard!
Oh - I should add that this can safely be used on pets to control or rid them of fleas or ticks. Safer and cheaper than those pesticide topicals that are really toxic!
Best Wishes!