Our family gets threadworms often. We use tablets from the chemist (mebendazole) This helps but they come back even when we take again after around three weeks due to the cycle of worms. We go through this maybe 3 or 4 times a year. Is there something in our diet contributing to this. Is there another way to treat it. We have six children ranging from 12 years to 8 months. I don't think the baby has them but don't really know. The next youngest is 3. I need the simplest way of dealing with this due to getting all the children treated. I am also breast feeding the baby.