If the clog is in the bathroom, check for hair that could be blocking the water flow. Use your finger or a sponge to remove any small clumps of hair lingering near the surface. For more stubborn hair clogs, or if standing water remains, try the
Drano® Snake Plus Tool + Gel System. It may be the perfect candidate to help unclog the drain, with a flexible snake tool to help loosen the clog before you use the gel.