We are unable to ship to mailing centers. Due to the hazardous nature of our product, the shipment may only be delivered to a location that can accept hazardous material and where a direct adult signature can be obtained. Third-party FedEx locations (such as Walgreens, or other FedEx stores) are not certified to accept nor store hazardous material, they are also unable to provide an adult signature as they are not the party addressed on the package.