although you will never get state legislators to admit it, i think sometimes that the roach is really the State Bird in a lot of places south of the Mason Dixon line.
an invasion doesn't necessarily mean you are condemned to an infestation.
wash and dry your fats using the delicate cycles of both machines. warm to hot water. usual laundry detergent. they will be fine.
grab a few cans of Raid from the store. spray those little suckers when you see them. treat your cabinets in particular.
if you are very, very concerned, one treatment by a professional exterminator should solve the problem.
i would also recommend you make a call to the merchant's customer service department. the truth is, the little buggers could have hitched a ride anywhere along the shipment route. however, the merchant will appreciate the warning to check their stockroom(s).