How often should I change or rekey my locks?

Mechanical wear matters: pin tumblers and springs wear with thousands of cycles. After about a decade in coastal or humid climates, replacement is smart — South Carolina humidity is hard on low-grade finishes.

A common security practice in Clover, SC: rekey on day one of moving in (you have no idea who has copies), and again any time keys go missing.

If you've recently had a break-in attempt, replace — a deadbolt that survived a kick may have hidden internal damage that makes it easier the next time.