Which pesticide is considered least harmful to humans?

Pyrethrum is derived from chrysanthemum flowers and is known for its low toxicity to humans and pets compared to many synthetic pesticides. Its formulation allows it to act quickly against a wide range of pests by affecting their nervous systems, but it breaks down rapidly in the environment, which reduces the risk of long-term exposure. This combination of efficacy against pests and lower toxicity to humans makes it a preferred choice for many household pest control applications, especially in settings where safety is a primary concern.

In contrast, options like DDT, chlordane, and aldicarb are synthetic chemicals that pose higher risks to human health. DDT, though effective in controlling mosquitoes and other pests, has been linked to various health problems, including potential carcinogenic effects and issues with reproduction. Chlordane has been banned in many countries due to its toxic effects and persistence in the environment. Aldicarb is highly toxic and can be harmful even in small amounts, making it particularly dangerous for humans and other non-target animals.

Choosing pyrethrum as a pesticide balances effective pest control with a much lower risk to human health, highlighting its status as a safer alternative in pest management practices.