Apr 01, 2015                  A bed bug, Cimex lectularius. Ohio State University    entomologists found that ActiveGuard mattress liners reduce    feeding and egg laying, even in bed bug populations that are    resistant to pyrethroids. Credit: Gary Alpert, Harvard    University, Bugwood.org, CC BY-NC 3.0 US     
      Products that claim to control bed bugs have been on the      market for years. Some work, and some don't.    
    Dr. Susan Jones, a professor of entomology at Ohio State    University, knows this as well as anyone, after having tested    many such products for years. While there have been some flops    in the past, she and her colleagues have found one that looks    promising as a new tool for bed    bug control programs. The results of their research are    published in an article in the Journal of Medical    Entomology.  
    Mattress liners sold under the trade name ActiveGuard are    impregnated with an insecticide called permethrin, which is    considered safe for humans and other mammals. Permethrin -    which belongs to a class of pesticides called pyrethroids - is    found in medical creams to treat scabies, shampoos for head lice, and it's the active ingredient in some flea-control products    for dogs and cats.  
    In recent years, however, some bed bug populations have    developed resistance to some pyrethroids and related    pesticides, making them less lethal. But for Jones and her    team, killing bed bugs is only one part in the effort to    control them.  
    "Death doesn't have to be the end-point that we measure in    studies," Dr. Jones said. "Physical or behavioral changes can    significantly affect the impact of bed bugs before death even    occurs."  
    One of these things is fecundity - the bed bugs' ability to lay    eggs and reproduce. In order to lay eggs, female    bed bugs must first have a bloodmeal, so the Ohio researchers    set out to test ActiveGuard's effects on bed bug feeding.  
    "Feeding in bed bugs and fecundity are very tightly coupled,"    Jones said. "If a female bed bug doesn't feed, then she is    unlikely to lay eggs, and if she doesn't lay eggs, then the    life cycle is interrupted."  
    Surprisingly, they found the ActiveGuard fabric to be extremely    effective, even in bed bug populations that were resistant to    pyrethroids. Bed bugs that were exposed to the fabric for ten    minutes were significantly less likely to even attempt feeding    compared to those on untreated fabric, and the majority were    unable to feed successfully. Even when they were successful,    their bloodmeals were only half the size of bed bugs that were    not exposed to the fabric.  
    Even more surprising, out of 52 females tested, only one laid a    single egg.  
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ActiveGuard mattress liners reduce bed bugs' ability to lay eggs, study finds