How often should you test GFCI outlets?
Every month.
How to do it
Press TEST on each GFCI outlet in the kitchen, bathrooms, garage and outside. The power should cut. Press RESET to restore it.
Why it matters
GFCIs protect against shocks near water, and they can fail without any sign.
Recommended interval: every month, per U.S. Consumer Product Safety Commission.
General guidance for a typical home; the manufacturer's instructions come first.