There is no pesticide that is completely harmless to humans, as they are all designed to be toxic to some form of life. However, some pesticides are considered to have low toxicity to humans and are generally safe when used correctly. These include:
- Insecticidal Soaps: These soaps are made from potassium salts of fatty acids and work by disrupting the cell membranes of insects. They are generally safe for humans and pets but can be irritating to the eyes.
- Horticultural Oils: These oils work by suffocating insects or disrupting their feeding and egg-laying. They are generally safe for humans and the environment.
- Neem Oil: Extracted from the neem tree, this oil disrupts insect growth and reproduction. It is generally safe for humans but can be irritating to the skin and eyes.
- Diatomaceous Earth: This powder is made from the fossilized remains of diatoms and works by cutting through the exoskeletons of insects, causing them to dehydrate and die. It is generally safe for humans but can be irritating to the respiratory system if inhaled.
- Bacillus thuringiensis (Bt): This bacterium produces toxins that are specific to certain insects, such as caterpillars and mosquito larvae. It is generally safe for humans and other animals.
- Boric Acid: This naturally occurring compound is effective against ants, cockroaches, silverfish, and termites. It is generally safe for humans when used in small amounts but can be toxic if ingested in large quantities.
It is important to note that even low-toxicity pesticides can be harmful if they are not used correctly. Always read and follow the instructions on the pesticide label carefully. If you have any concerns about the safety of a pesticide, contact the manufacturer or a qualified pest control professional.