Rest the paint roller on the edge of the latex paint can.
Scrape excess paint off the roller into the can using a putty knife or paint stirrer.
Turn the roller after each scrape until you've removed paint from the entire circumference of the roller.
Place the roller in an empty bucket with the roller handle still attached.
Rinse the roller with a hose, collecting the rinse water in the bucket, to remove any remaining paint while holding the roller handle.
Place the roller in a well-ventilated place to air dry.