Why monthly
Approvals accumulate as you use dapps. Projects you trusted can be compromised later, turning an old approval into a liability.
What to look for
Unlimited approvals, contracts you no longer use, and anything unfamiliar. Prioritize revoking access to your most valuable tokens.
Make it routine
Set a recurring reminder, run the checker across the chains you use, and revoke aggressively. It costs a little gas and removes standing attack surface.