Does anyone have any experience of threadworms that don't go with the two doses of Ovex and hygiene?? I can't figure out what's gone wrong - I'm fine after the medicine and then around a week later symptoms come back. I'm getting reinfected but can't work out how as we're being so careful and no one else is showing symptoms. Any tips on what finally worked or made a difference? If nothing else it would be reassuring to hear that they don't always go with the first attempt - and they will go soon. Help please!!