How can lice be eliminated using dichlorvos? - briefly
Dichlorvos, an organophosphate vapor, is applied to infested hair or garments as a spray or impregnated strip, killing lice through neurotoxic action. Post‑treatment washing of personal items and a follow‑up inspection after 7–10 days prevent reinfestation.
How can lice be eliminated using dichlorvos? - in detail
Dichlorvos (2,2-dichlorovinyl dimethyl phosphate) is an organophosphate insecticide applied to eradicate pediculosis. Its mode of action involves inhibition of acetylcholinesterase, leading to accumulation of acetylcholine at neural synapses and rapid paralysis of the parasite. Effective use requires strict adherence to dosage, exposure time, and safety protocols.
Application procedure
- Prepare a 0.1 % solution of dichlorvos in distilled water or a commercially formulated spray.
- Apply the solution uniformly to the hair and scalp, ensuring complete coverage of all hair shafts and skin surfaces.
- Maintain contact for the manufacturer‑specified duration, typically 10–15 minutes, to allow sufficient absorption.
- Rinse thoroughly with lukewarm water and mild soap to remove residual chemical.
Safety measures
- Conduct treatment in a well‑ventilated area to prevent inhalation of vapors.
- Wear protective gloves and eye protection during preparation and application.
- Keep the product away from children, pregnant individuals, and pets.
- Store the concentrate in a locked, labeled container out of reach of unauthorized persons.
Post‑treatment considerations
- Repeat the procedure after 7–10 days to target newly hatched nits that survived the initial exposure.
- Combine chemical treatment with mechanical removal of nits using a fine‑toothed comb to reduce reinfestation risk.
- Monitor for adverse reactions such as scalp irritation, excessive redness, or systemic symptoms; discontinue use and seek medical advice if they occur.
Regulatory and environmental aspects
- Dichlorvos is classified as a restricted‑use pesticide in many jurisdictions due to its toxicity profile; verify local regulations before procurement.
- Dispose of unused solution and contaminated materials according to hazardous waste guidelines to prevent environmental contamination.
By following precise formulation, application, and safety protocols, dichlorvos can achieve rapid and thorough eradication of head lice while minimizing health and ecological risks.