Sentences with phrase «because pyrethroids»

Because pyrethroids pose little threat to people, says Morrison, farmers get the impression that they are safe.

The locust fly is encouraged because the pyrethroid does not kill the locusts instantly, but instead takes between three and five days to do the job.

Not exact matches

Pyrethroids have also played a role in the fight against Aedes aegypti, the main mosquito transmitting the yellow fever, dengue, and Zika viruses, even though bed nets are less effective against A. aegypti because it predominantly bites people outdoors and during the day.

Children are more highly exposed to pyrethroids because «they spend a lot more time on the floor and have much more hand to mouth activity,» Barr said.

California, Weston said, doesn't want to return to using organophosphates such as chlorpyrifos, which was banned from household use because of human health concerns, «but they want to control the use of pyrethroids to minimize the environmental effects we document.»

«Pyrethroids tend to accumulate in dust or on surface areas in homes because they don't evaporate easily into the air.»

«Pyrethroids are obviously a safer alternative to organophosphates, but just because they are safer doesn't mean they are safe,» said Dana Boyd Barr, a research professor of environmental health at Emory University's Rollins School of Public Health in Atlanta, Georgia.

Bedbugs have become a big problem in U.S. hotels and homes over the past decade, in part because they are resistant to a widely used class of insecticides called pyrethroids.