Sift thru the stool with a plastic fork. Whatever looks suspicious, pull it out and put it in a glass jar of warm water. Put the lid on it and shake it up to clean it.
Take it out when it appears clean, and place it on a white paper plate with a quarter or dime next to it for scale. Photograph it in good light. Put a date on it. Send it to us.
Some parasites come out partially digested.