O'Reilly Auto Parts in Sunland Park, New Mexico, is a place where customers can find auto parts and accessories with relative ease, often receiving ordered items in less than 48 hours. The staff is generally helpful and friendly, with some employees, like Fermin, being especially known for their kindness and willingness to assist customers without hesitation. Visitors often appreciate the attentive service, such as when a young lady named Brenda helped find wiper blades for an elderly customer and even provided a discount, making the experience pleasant. However, there are concerns about hygiene and customer service from certain employees, notably one with dark hair, whose bad breath and attitude have caused some customers to feel uncomfortable and choose to return when she is not working. Overall, the store is valued for its good product selection and quick turnaround, but improving staff hygiene and customer service could enhance the shopping experience.