Which pesticide type is well known for its environmental safety concerning human exposure?

Biorational pesticides are known for their environmental safety and lower risk to human health compared to other types of pesticides. They are often derived from natural sources, such as plants or microorganisms, and are designed to target specific pests without causing significant harm to beneficial organisms, humans, or the environment at large. This specificity minimizes the risk of unintended consequences associated with broader-spectrum conventional insecticides, which may affect many non-target organisms and contribute to greater environmental and health risks.

Biorational pesticides typically have lower toxicity levels and shorter residual effects in the environment, which makes them a preferred choice for integrated pest management programs aimed at reducing reliance on conventional chemicals. The emphasis on safety and the use of naturally occurring substances aligns with increasing regulatory scrutiny and consumer preference for sustainable agricultural practices.

In contrast, conventional insecticides are often broader in their application and can pose higher risks to non-target species, including beneficial insects and potentially to human health. Systemic insecticides penetrate plants and can move throughout the plant's tissues, which may lead to greater environmental persistence and risks. Cover sprays, while effective for certain applications, might involve broader chemical use that can also have environmental and health impacts.