Hi Pamela, Our Oil Rubbed Bronze finish is a "living finish" that will age and wear gracefully over time. Atmospheric conditions can cause staining and alkaline etching that varies by geography. In addition, frequency of use will cause the finish to gracefully age in appearance. These finish changes are not considered manufacturing defects and are not covered by this warranty. Rather, they are indicative of normal wear and tear and reflect the essence of a living finish. Due to the nature of Baldwin living finish products, they will wear over time and may already have begun the process before reaching your home. No finish warranty is offered on Baldwin living finish products, which are designed to age and improve over time. Living finishes include raw brass, oil rubbed bronze, stainless steel, and other non-lacquered or non-PVD finishes. Thank you, Baldwin Hardware