Hello there and Happy Weekend! We want to let you know that we are experiencing technical difficulties processing credit card orders this weekend 4/22/11 through 4/25/11. Orders processed using PayPal are fine. If you wish to use your credit card, please call us at 888-PETS-535 or send us an email (orders@endurapet.com) to order and we will cheerfully assist you. We are also offering free shipping while this error is fixed. Thank you so much and we sincerely apologize for any inconvenience. Again, thank you!