How can lice be removed with dichlorvos? - briefly
Lice are eliminated by applying a licensed dichlorvos formulation to the scalp and hair, maintaining the manufacturer‑specified exposure time, then rinsing thoroughly. Due to the compound’s high toxicity, the procedure should be carried out by a qualified professional and only when other pediculicides are unsuitable.
How can lice be removed with dichlorvos? - in detail
Dichlorvos, an organophosphate insecticide, acts by inhibiting acetylcholinesterase, causing paralysis and death in lice. Application typically involves a liquid formulation diluted according to the manufacturer’s instructions, then sprayed directly onto the scalp and hair. After thorough saturation, the product must remain on the hair for the period specified—usually 10 to 15 minutes—before rinsing with warm water. Re‑treatment after seven days eliminates newly hatched nits that survived the initial exposure.
Safety considerations are critical:
- Wear disposable gloves and protective eyewear during handling.
- Ensure adequate ventilation; avoid inhalation of vapors.
- Do not apply to broken skin, irritated scalp, or children under two years of age.
- Store the chemical in a locked container away from food and pets.
Effectiveness depends on proper coverage. To achieve uniform distribution:
- Separate hair into sections of 2–3 cm.
- Apply the solution with a spray bottle or pump sprayer, saturating each section.
- Massage gently to ensure contact with the entire surface of the hair shaft and scalp.
- Comb through with a fine-toothed lice comb to dislodge remaining insects and nits.
Post‑treatment measures include washing all bedding, clothing, and personal items in hot water (≥ 60 °C) and vacuuming upholstered furniture. Regular inspection of the scalp for at least three weeks helps confirm eradication.
Regulatory agencies in many countries restrict or prohibit consumer use of dichlorvos due to its toxicity. Verify local guidelines before purchase; professional pest‑control services may be required where over‑the‑counter sales are banned. If dichlorvos is unavailable or unsuitable, alternative treatments such as permethrin, ivermectin, or mechanical removal with specialized combs should be considered.