Embodiments of a disposable liner that is disposed in a cavity of a basin are disclosed. In one embodiment, a disposable liner that is disposed in a cavity of a basin includes sidewalls that are designed to adapt to the contours of the cavity of the basin and a bottom wall that is attached to the sidewalls and includes a drainage hole that is aligned with the drainage hole of the basin. The disposable liner further includes a cover that seals the drainage holes, preventing water from draining out of the disposable liner through the drainage hole. The cover includes an elongated tab that extends to a top edge of at least one of the side walls. The elongated tab is designed to facilitate peeling the cover off the disposable liner.