A school nurse identifies that a child has pediculosis capitis and educates the child's parents about the condition. Which of the following statements by the parents indicates an understanding of the teaching?

"Toys that can't be dry cleaned or washed must be thrown out."

"All recently used clothing, bedding, and towels must be washed in hot water."

"My child must be free from nits before returning to school."

"I will treat all the family members to be on the safe side."