Look for Irish Twins Soap Co. this weekend at the Autumn Festival at the Sioux Falls Convention Center. Friday - 11 a.m. - 9 p.m.; Saturday - 9 a.m. to 7 p.m.; and Sunday, 10 a.m. to 5 p.m. We're bringing our pumpkin soap, orange cinnamon oatmeal soap and whole array of natural soaps, sugar scrubs, lip balm, & homekeeping goodies.