thanks for all the information on selling used books. the earlier roach post made me think of our situation with flies. we live in a house, so no wall to wall neighbors. we are inundated with fruit flies and black flies. last year i thought i would drive myself mad trying to kill the black flies. for the fruit flies we bought a kind of expensive trap from lee valley tools which worked to a point. i don't think it ever got cold enough here in chicago to kill the remaining bugs off for the season. so now that spring is starting, they are out in full force. most pest sprays in stores don't seem to address flies indoors. i have cats, so anything i do has to be safe for them. i am trying fly paper, but you'd think it had fly-repellent smell or something because the flies don't go anywhere near it, even though i put it in their former favorite hanging out place. anyone else have this problem?