A 55-year-old woman had diverticulitis complicated by abscess 8 weeks prior to this admission. She underwent percutaneous CT-guided drainage at that time. Due to incomplete drainage and persistent inflammation she underwent sigmoid resection and Hartmann's procedure (end descending colostomy, closure of the rectal stump) on the first admission. She returned for reanastomosis. She underwent bowel prep and rectal stump washout with Fleet's enema prior to coming to the operating room, and the rectal stump was irrigated with betadine solution prior to skin prep in the operating room. The stoma was sutured closed prior to skin prep.