Fecal testing is the number one way to tell if a tortoise has a build up of worms, Flagyls or Emebia. At home testing is able to be accomplished and a microscope is needed. Under the microscope, pin worms and hook worms will be visible and will have the shape and movement of a normal worm. Worm eggs can also visibly be seen, these will be a see through circles with two other perimeter rings. Normal de-worming methods will remove these build ups.