Please be assured that your items will ship out within two days of purchase. We determine the most efficient shipping carrier for your order. The carrier is: U.S. Postal Service (USPS). Sorry but we cannot ship to P.O. Boxes. If you’re trying to estimate when a package will be delivered, please note the following: Credit card authorization and verification must be received prior to processing. If you require express or 2 day shipping, please call us at +1 (877) 4-KNOWHEN for charges. US SHIPPING AND HANDLING COSTS: 1 KNOWHEN® KIT $4.99 PLEASE NOTE: Out of state orders WILL NOT be charged sales tax. In state orders will be charged 6.6% sales tax.