This research will be conducted in the Helen DeVos Children's Hospital (HDVCH) Pediatric gastrointestinal outpatient clinic. A pilot study of ten patients will be conducted to evaluate if GMT improves clinical symptoms in patients with IBD. Patients with IBD colitis (UC and CD with colonic involvement only) will be approached for GMT as a treatment option for their disease. Each subject will undergo 5 sessions (1 session/day, and not necessarily on consecutive days) of GMT within a period of 10 days. Post treatment evaluation will be done at their regularly scheduled clinic follow up.