Roaches that have been hard to trap may be a variety that find sugar doesn't taste quite so sweet as bait anymore, a study suggests. Most cockroach baits cover poison in a layer of glucose, a sugar.

Despite the number of insecticides, roach traps, roach sprays, and roach baits on the market today, getting rid of an established cockroach colony is never easy. For every cockroach that forages for ...