Abstract: A receptacle for receiving fluid such as water that is preferably placed within a cabinet supporting a sink. The receptacle is preferably positioned adjacent the bottom of the cabinet. The receptacle is preferably formed with flexible, flared sides and a frangible front portion to enable the receptacle to fit within a variety of differently sized cabinets. The receptacle can have a hole and funnel for alignment with a mating aperture in the cabinet above the toe-receiving recess of the cabinet. Thus, leaking water from the sink pipes can be directed through the aperture in the cabinet and onto the floor in front of the cabinet to bring the leak to the attention of the user of the sink.