Q.
Since many years i have not seen a bug. neither heard abt them , the bug i am hearing abt is bug in a computer programme only ? comment pl.
Asked by sitapati rao,
30 Nov '09 03:23 am
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Answers (2)
1.
Bedbugs had nearly been eradicated by the widespread use of potent insecticides such as DDT. However, many of these strong insecticides have been banned from the United States and replaced with weaker insecticides such as pyrethroids. Many bedbugs have grown resistant to the weaker insecticides. In a study at the University of Kentucky bedbugs were randomly collected from across the United States. These wild bedbugs were up to several thousands of times more resistant to pyrethroids than were laboratory bedbugs. New York City bed bugs have been found to be 264 times more resistant to deltamethrin than Florida bedbugs due to nerve cell mutations. Another problem with current insecticide use is that the broad-spectrum insecticide sprays for cockroaches and ants that are no longer used had a collateral impact on bedbug infestations. Recently, a switch has been made to bait insecticides that have proven effective against cockroaches but have allowed bedbugs to escape the indirect treatment
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Answered by Jack Johnson, 30 Nov '09 05:39 am
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