The Army & Air Force Exchange Service is giving away a new washer and dryer in the P&G Tough Mudder sweepstakes. Through Nov. 15, authorized shoppers can visit ShopMyExchange.com to share a photo of a challenging stain and be entered for a chance to win a washer and dryer of choice (up to $1,200 value) and Tide Sport products worth $300. Two runners-up will each receive Tide Sport products valued at $250. No purchase is necessary to enter, and entrants need not be present to win. The sweepstakes winner will be selected on or about Nov. 30.