Dog Haus’ National Cheeseburger Day deal is here! Visit Dog Haus on Wednesday, September 18 and make any cheeseburger a double on the Haus. Guests get a second patty with cheese added for FREE when ordering one of seven Haus Burger creations, including the Little Mule – topped with white American cheese, avocado, pickled jalapeños, cotija cheese, fried egg and chipotle aioli, served on grilled King’s Hawaiian rolls. Who doesn’t love an upgrade? Simply scan the Dog Haus app in-restaurant to redeem.