Kangaroo Express convenience stores will be celebrating National Hot Dog Day on Wednesday, July 23rd, 2014, by giving away free hot dogs. There are two ways to be eligible for a free hot dog. If you’re a member of the military, just show your military I.D. for a free dog. The second way is to show the Kangaroo Express Mobile App on your phone. When you do that you’ll receive a coupon voucher for a free hot dog. Everyone else: show up between 4 p.m. and 8 p.m. and you can get a Ballpark hot dog for just 50 cents, with a limit of four per customer. Looking for more deals? Here are 8 more food freebies and deals this week.