I don't like taking medicine. does anyone know a natural or herbal way to get rid of pinworms?

None: The medical treatment for pinworms is a short course of anti-helminthic (anti-worm) drugs, usually for 3 days. They have almost no side effects, usually are cheap, and are very effective. There is no reason to seek alternative treatments.

Natural not always : Herbs or "natural" treatments are not always safe, and sometimes are dangerous. They are uncontrolled, easily contaminated, and are usually complexes of many chemicals. Use a medication that is safe and effective and extensively monitored.

Yes: There has not been a lot of research on this but even mainstream docs advise hygiene measures at home- see http://www.Md-health.Com/home-remedies-for-pinworms.Html as for herbs, garlic may work best. See http://www.Thesurvivaldoctor.Com/2012/04/17/getting-rid-of-pinworms/ for other ideas see http://www.Healthguidance.Org/entry/15625/1/home-remedies-for-pinworms.Html good luck!