How often should you clean your dishwasher filter?
Every month.
How to do it
Twist out the filter from the bottom of the tub, rinse it under the tap and scrub it with a soft brush.
Why it matters
A clogged filter leaves grit on clean dishes and makes the machine smell.
Recommended interval: every month, per Whirlpool.
General guidance for a typical home; the manufacturer's instructions come first.