You can prevent becoming infected or reinfected with pinworms by:
* Bathing frequently
* Using clean underclothing, night clothes, and bed sheets
* Washing your hands routinely, particularly after using the bathroom
My family is not poor or dirty and my daughter was infected with pin worms last fall. The nurse says the source was likely some unwashed vegetables. Nobody else in the family became infected but we all had to take the same medicine she did. It was awful for her.