Bed bug and cockroach genomes reveal how they spread in urban areas and resist insecticides, potentially guiding better pest ...

One gene, CYP397A1, can be over-expressed more than 36 times in resistant bugs. Target site changes: Mutations alter the sites where insecticides would normally bind, making the chemicals ineffective.

Fast facts on eliminating bed bugs Bed bug infestations have recently become more common again in the U.S. Infestations are difficult to control because they evade pesticides and are not easy to see.

[The garden also uses predatory insects that eat pests, rather than using chemicals. The greenhouse is also completely closed off from the elements, with fine screens on vents to keep the bugs out.

Daily Email Newsletters In The Margins: Revisit chemical rules in fight against bed bugs Updated: Oct. 08, 2010, 10:37 a.m. | Published: Oct. 08, 2010, 9:37 a.m.