Abstract: Disclosed are splash-proof covers and methods of use to prevent liquid within a pipe under the drain of a sink having a basin from splashing out of the sink. The covers include a central body portion having an undersurface from which plural spaced apart, suction cups project downward. The covers may include an anti-microbial and/or anti-fungal agent and are configured to be disposed in the sink with each of the suction cups releasably engaging respective portions of the basin surrounding the drain and with the central body portion being located directly over the drain and spaced slightly thereabove. The central body portion enables water from a faucet to flow under it into the drain while providing a barrier to prevent any liquid within a pipe under the drain from splashing back into the sink.