
Visiting NY? You may need to be a bit more careful.
NY too now has bedbugs resistant to pesticides – including Deltamethrin – an important bedbug pesticide.
NY bedbugs are 264 time more Deltamethrin resistant than Florida bedbugs according to the Journal of Medical Entomology 45(6):1092-1101. 2008
Exterminators often use these insect neurotoxins for their effectiveness and “knock down” rates. Unfortunately, now they usually need to spray several times – not just once.
With bedbugs, direct contact with the spray is typically needed, the residue is less effective and bedbug eggs are much more resistant. By the time the eggs hatch, the pesticide is less toxic to the bedbugs and as a result re-spraying is needed to get the new bugs in their nymph or adult stage. Adult bedbugs hide as well and often avoid direct contact with the pesticide spray. Re-spraying encourages chemical resistance in bedbugs to develop. With world wide pest spraying – resistance has developed. With world wide travel, resistant bedbugs spread.
New York, Vancouver, Toronto, Los Angles have all seen outbreaks of more resistant bedbugs.
Non-pesticide control is becoming more urgent. Not dealing with bedbugs is expensive.
Diatomaceous earth blends are leading contenders in physical control without pesticides.
An interesting alternative.



