Clogs can occur with the drains that are in a tub or shower, such as a Moen Push-N-Lock drain assembly. This type of drain opens and closes using a knob on the drain. When the drain gets clogged with hair and debris, it will need to be cleaned. You can unclog this type of drain assembly by first removing the stopper to gain access to the drain.
Lift the stopper up to the "open" position. Hold onto the stopper and then unscrew the pull knob by turning it counterclockwise. Remove the pull knob and set it aside.
Insert a flat-head screwdriver into the brass insert that is securing the stopper. Hold onto the stopper and then turn the screwdriver counterclockwise. Continue turning the brass insert counterclockwise until you can pull it out of the drain.
Lift the stopper out of the drain and set it aside.
Bend the end of a section of coat hanger into a small hook shape with a pair of needle-nosed pliers.
Insert the coat hanger into the drain and turn it as you push it down. Push the coat hanger into the drain about 6 to 8 inches and then pull it out. Alternatively, you can use a drain "snake" to unclog the drain.