Discount codes don't stack. If you have 50% off discount, they can't also use a "free shipping" coupon since Only one discount at a time can apply to a single order at the dogeat site.

Normally, one discount code is only applied for one offer. However, If the users put a vast of items in their cart, it is easy to use one coupon code to purchase items. It depends on dogeat's policy, you can contact dogeat via mail for your reference.

To avoid this problem, you should check out carefully dogeat promo code before that promo code could be expired, some promo codes are tied to a minimum purchase, a first-time purchase, or tied to geography, and other reasons.

At our site, The Biggest Deals, Exclusive Coupon Codes from dogeat tend to be on the top of the coupon list. Besides, on the left sidebar, the Biggest Coupon and Total Offers are also given out. Currently, the biggest coupon for dogeat is 50%. 

Usually, Coupon Stacking is not allowed at dogeat. However, the store will surely give out notice if available.

Shoppers can get coupons for their first purchase at the store. However, it is not all the time, sometimes, they cannot apply a discount on items selling out or items not contained in the promotion program. It depends on the time you shop at dogeat.