The disposable excreta management device has a longitudinal centerline, a transverse centerline, a wearer facing surface and an opposing surface. The disposable excreta management device comprises a flexible bag to contain excreta and an adhesive flange to attach the device to the body of a wearer. The flexible bag has an opening surrounded by the adhesive flange. The adhesive flange has an outer periphery and an inner periphery. The adhesive flange comprises an adhesive layer and a substrate. The substrate has at least one base-slit extending from the outer periphery to the inner periphery along the longitudinal centerline. Alternatively, the adhesive layer may have a surface-slit extending from the outer periphery to the inner periphery along the longitudinal centerline and the surface-slit is positioned between an anus and a urethra when the device is worn.