Household insecticides, commonly used to combat mosquitoes and other pests, pose significant health risks due to improper usage practices in Burkina Faso. Dr. Bibata Ouédraogo, a doctor in analytical and environmental chemistry, has raised alarms about these dangers, highlighting issues such as excessive spraying, direct exposure to products, and the use of mosquito coils in poorly ventilated spaces.

Dr. Ouédraogo explained that insecticides contain active ingredients designed to eliminate or repel insects. While some are derived from natural sources like neem or chrysanthemum, most commercially available products in Burkina Faso utilize synthetic compounds, including organophosphates and pyrethroids. These chemicals work by disrupting the insect’s nervous system, often by inhibiting crucial enzymes like acetylcholinesterase, which is also present in humans. This shared biological mechanism is why these substances can be harmful to people.

The consequences of human exposure can be severe. Dr. Ouédraogo noted that molecules in insecticides can interfere with nerve impulse transmission in humans, potentially denature cells, damage DNA, and even lead to cancerous diseases. Beyond direct health impacts, the overuse of insecticides can also contribute to the development of insect resistance, necessitating a frequent change in product brands.

Dangers of Mosquito Coils and Spraying Practices

Mosquito coils, a common solid-form insecticide, present a double threat. In addition to releasing the same harmful chemical compounds as sprays, their incomplete combustion generates carbon monoxide. Furthermore, volatile molecules in the smoke can obstruct airways and settle in the lungs, making it inadvisable to sleep with them burning. Symptoms of exposure can range from immediate headaches, coughing, and dizziness to long-term cardiovascular diseases and cancers.

Dr. Ouédraogo stressed the importance of safe spraying practices. She advised that homes should not be occupied immediately after spraying, recommending a waiting period of at least three to four hours. Before spraying, residents should protect themselves by moving food and kitchenware, and ideally wear protective gear like gloves and masks. She personally sprays her home in the morning and only re-enters in the evening after airing it out thoroughly.