Flagyls and Emebia are the two of the most common parasites and bacteria that are looked for in fecal testing. Flagyls will have an up and down movement under the microscope while Emebia will be white oval shaped bacteria that crawl in a sideways motion. For both of these, normal de-worming methods will not remove the buildup. A few rounds of medication called Flagyl Suspension or Metronidazole is needed.