Dog Poop Bag Holder Medium (30-60 lb dog) Blue Wag'n'Load works with ALL types of leashes or No leash at all. With Wag'n'Load you can use your own poop bags or a dog poop bags dispenser. Wag'n'Load provides an external pocket for an inverted bottle of hand sanitizer. Wag'n'Load comes in different sizes and different colors!