Most of us learned in our early years that cockroaches would survive a nuclear attack, I know its hard to believe but they have adapted well to us and our ways.
Well it appears that they have learned to avoid some of the sweet baits, which we (Pest Industry) may be using. “Wily Cockroaches Find Another Survival Trick: Laying Off the Sweets” By James Gorman – The New York Times – Science section.
One thing I didn’t notice with the research was that in certain time periods cockroaches prefer different food like proteins and will readily avoid anything sweet. So I think the research will continue and will continue to offer us new products to keep roaches at bay.