BEACON TRANSCRIPT – A new research shows that bed bugs have become more resistant to insecticides than they used to be. The two insecticides in question are bifenthrin and chlorfenapyr. After using them against bed bugs for such a long time, the parasites were able to develop quite a high level of resistance against them.
Over time, people have been using a lot of methods to get rid of bed bugs. Instead of defeating them, this has only helped them grow stronger and harder to kill. This led to the fact that chemicals are not enough to kill them now. As the chemicals’ low effectiveness has become more acute in the last decade, bed bugs made an incredible comeback and people struggle to get rid of them.
Bed bugs become resistant to widely used products
Previous studies on the development of bed bugs discovered how these parasites started becoming resistant to all those products which were widely used for their destruction. Now, this new study discovered that bed bugs started showing the same behavior towards bifenthrin and chlorfenapyr.
Ameya Gondhalekar, one of the authors of the study and a researcher from Purdue University, explained what their findings taught them. Since chlorfenapyr and bifenthrin can no longer work on their own against bed bugs, we should resort to other methods. We might not have to give up these chemicals completely, as they might still keep some efficacy against the parasites if they are combined with other eradication methods.
Researchers decided to try an experiment in which they took the two insecticides and tested their efficacy against bed bugs. They collected 10 bed bug populations from New Jersey, Ohio, Indiana, Washington DC, Virginia, and Tennessee. Then, they exposed them to these insecticides for seven days and looked at how many were destroyed.
Combining chemicals with other methods makes them more effective
If more than 25 percent of the population survives after a pesticide attack, then it means that it is no longer sensitive to it. Most of the bug populations survived after being treated with these insecticides. However, researchers discovered that they could combat their developing resistance if they combined the chemicals with other non-chemical methods.
Therefore, chemical methods are more effective if they are administered in combination with other methods, such as heat, steam, or vacuuming. These combinations should reduce the resistance of the bugs and boost the effect of insecticides. Thus, bed bug populations can be kept under control.
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