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METHOD OF PAYMENT: Dupont accepts Visa, MasterCard, Interac, Cheque, and Cash. If paying for your order by credit card via a telephone order payment, please note that we require an electronic swipe as backup that you authorized the purchase on your credit card over the phone. Therefore, please be sure to bring that credit card to our store when picking up your order (or have it with you at the site where your order is being delivered). Orders paid by cheque require a photocopy of a drivers license of the individual on whose account the cheque is drawn on.