How to eliminate lice using dichlorvos? - briefly
Apply dichlorvos in a properly vented area following the product label, treating the scalp and surrounding surfaces, then repeat the application after 7 days to kill any newly hatched lice. Use protective gloves and a mask, and keep children and pets away during treatment.
How to eliminate lice using dichlorvos? - in detail
Eliminating head‑lice infestations with dichlorvos requires strict adherence to safety protocols, accurate dosage, and thorough coverage of the affected area.
Dichlorvos is an organophosphate insecticide that interferes with acetylcholinesterase, causing paralysis and death of the parasite. The product is typically supplied as a liquid concentrate or a pre‑mixed spray for topical use on hair and scalp.
Preparation and safety measures
- Wear disposable gloves, protective eyewear, and a mask to prevent inhalation and skin contact.
- Ensure the treatment area is well‑ventilated; open windows and use a fan to disperse vapors.
- Keep children, pets, and pregnant individuals away from the space until the product has dried and the room has been aired out for at least 30 minutes.
- Read the material safety data sheet (MSDS) supplied by the manufacturer; note the specific hazard symbols and first‑aid instructions.
Dosage and application
- Dilute the concentrate according to the label, generally 0.5 mL of dichlorvos per 100 mL of water for a 0.5 % solution.
- Saturate the hair, ensuring the scalp and root zone are fully covered; avoid excess runoff.
- Allow the solution to remain on the scalp for the time specified on the label, typically 10–15 minutes.
- Rinse thoroughly with lukewarm water; do not use hot water, which can increase skin absorption.
- Comb the hair with a fine‑toothed lice comb to remove dead nymphs and eggs; repeat the combing process for three consecutive days.
Post‑treatment procedures
- Wash all clothing, bedding, and personal items in hot water (≥ 60 °C) or seal them in a plastic bag for two weeks to kill any residual insects.
- Dispose of gloves, applicators, and any contaminated materials in a sealed container; follow local hazardous waste regulations.
- Conduct a follow‑up inspection 7 days after the initial treatment; if live lice are detected, repeat the entire protocol once more.
Precautions and contraindications
- Do not apply to individuals with known hypersensitivity to organophosphates.
- Avoid use on children under 2 years of age unless explicitly approved by a medical professional.
- Do not combine with other pesticidal products; simultaneous use may cause toxic synergism.
- Store the chemical in a locked, temperature‑controlled cabinet away from foodstuffs.
Effectiveness assessment
- Successful eradication is indicated by the absence of live lice and viable nits after the second inspection.
- Persistent infestation after two full treatment cycles warrants consultation with a healthcare provider for alternative therapies.
Following these steps ensures maximal efficacy of dichlorvos while minimizing health risks to the treated individual and surrounding environment.