You can get a free burger this week ... can redeem the offer by using the code SLIDERDAY on the app. A coupon is also available on White Castle's website and social media. White Castle is also ...

White Castle will celebrate National Slider Day on May 15 by offering customers a free Original Sliders. There is no purchase necessary, but customers can use a digital coupon available on White ...

White Castle is offering customers a free original slider on ... coupon from White Castle’s website. To redeem the offer using the White Castle app, use the code “SLIDERDAY.”“ ...

COLUMBUS, Ohio — White Castle is giving away free sliders ... Slider.” No purchase is necessary. Customers can use a digital coupon available on White Castle’s website and social media ...

You can get a free ... Slider," Richardson continued. Foodies won't have to buy anything to receive the free burger. White Castle customers can redeem the offer by using the code SLIDERDAY on ...

White Castle introduced National Slider Day in May 2015 to ... coupon available on White Castle’s website and social media channels or enter the code SLIDERDAY on the White Castle app to redeem ...