This is an old post by now, But i would like to offer some advice (based on my own struggles with pinwoms) Hoping it may help someone looking for answers. The cure lies all in the timing of the medication. I see a lot of people claiming the worm treatments they have used aren't working. I got them gone for good, and this is Exactly how: once you take the medication, say for example, on a thursday, it will paralyze and kill all adults. (but leave the eggs) it takes a typical pinworm egg two weeks to hatch, so the key is to treat again aproximately two weeks after the first dose, two thursdays later, (to prevent new eggs from being laid) and as always WASH WASH WASH. wash everything! bedding, clothing, hands, everything you come in close contact with. also, remember, everyone in the house has got to be treated at the same time, and then re-treated two weeks later at the same time. This method worked for me. I really hope you are cured and can finally rest easy, these little bastards are NO JOKE.