Pyrethroid insecticides come under question

Interestingly, pyrethroid synthetic chemicals are derived from a botanical insecticide that humans have used for hundreds of years. They are considered to be relatively harmless to vertebrates. Yet they are slower to break down in the environment. That and other reasons have lead some investigators to do more research on pyrethroid in the environment. Among some of the findings, Caddis flies that have been exposed to pyrethroid construct disorganized houses. It may not seem like much, but it's quite shocking behavior from one of nature's prominent engineers (trust me, they invented the pivot tube long before we did --and you shuld see the marvels of the family Heliocopsychidae - biomicicry! it just doesn't get any more exciting!). So does the caddis fly species Brachycentrus americanus have ADHD?

Many pyrethroids are used in common lawn chemicals, which means that urban and suburban areas are a potential major source of these chemicals. If you read the article, you will find that the researchers were able to show that lawn runoff is indeed the prime source of pyrethroid...