One of the more common parasites found in humans, roundworms — with an appearance similar to the common earthworm — make their home in our digestive system. Roundworms are primarily known to make their homes in the small intestine, but can thrive anywhere in the gastrointestinal tract. Often there are no pronounced symptoms from roundworms, but some people experience fevers, dry cough, and irregular bowel movements. Nausea and vomiting are also possible. Of course, seeing the roundworm in the stool is a sure sign. Here are some home remedies that have over time been reported to be effective.