We have had several letters home, the general kind that says they're around. Have checked dd's head. I see nothing. What should I expect to see? How should I treat? Is it possible to have them and see no itching or visible signs? The only thing I saw on her head were tiny tiny black specks, but this was after a day playing in the park. Looked like common or garden dirt. I am nervous that without me knowing, dd is "that child" !