A school nurse is providing teaching to the guardian of a child who has pediculosis. Which of the following statements by the guardian indicates an understanding of the teaching?

Pediculosis (head lice infestation) is a common parasitic condition in school-age children caused by Pediculus humanus capitis. Transmission occurs through direct head-to-head contact and, less commonly, through contaminated personal items. Management involves pharmacologic treatment of the scalp and environmental decontamination of items that may harbor lice or nits. Effective eradication requires breaking the cycle of reinfestation through proper hygiene and cleaning measures. Rationale: A. Placing hairbrushes, combs, and hair accessories in boiling water for 10 minutes is an appropriate method to kill lice and nits on personal items. High heat effectively destroys parasites and prevents reinfestation when items are reused. This demonstrates correct understanding of environmental decontamination for pediculosis. B. Sealing nonwashable items in a plastic bag for 1 week is incorrect because lice cannot survive more than 1 to 2 days without a human host. Recommended quarantine for nonwashable items is typically about 48 hours to 2 days, not a full week. Prolonged sealing is unnecessary and reflects incorrect timing. C. Using medicated shampoo daily for 3 days is incorrect because most pediculicide treatments are applied once and then repeated only if needed after 7 to 10 days. Overuse can cause scalp irritation and does not improve effectiveness. Proper timing is essential to target newly hatched lice after the initial treatment. D. Washing clothing and bedding using a double rinse is unnecessary because lice are primarily transmitted through direct head contact rather than fabrics. Standard washing in hot water and drying on high heat is sufficient to eliminate lice. A double rinse does not provide added benefit in preventing reinfestation.