An ostomy pouch replacement device allows ostomates with a surgically created stoma to collect, contain and dispose of bodily fluids during hygienic maintenance. The device is customizable to each ostomate's unique stoma diameter and provides a disposable waste receptacle having a hollow absorbent section and a solid absorbent section for sanitary, discreet and odorless disposal of both urine and excrement. The disposable waste receptacle may include a super absorbent polymer powder that becomes a gel in the presence of liquid. The device preferably consists of a disposable waste receptacle that may be positioned over the stoma and includes an absorbent inner material for capturing waste, a cap or plug for sealing the device after use, and a collar stand for pressing an adhesive wafer to the skin and for holding the assembled device in an upright position.