The Blue Bone Waste Pick-Up Dispenser & Refill Bags provides a convenient way to dispose of your pet's waste. The compact, refillable dispenser easily attaches to most leashes with the included metal carabineer. Easily refilled with the leak-proof Bags On Board refill rolls, it includes two rolls of bags. Pet waste pick up is a necessity. For responsible pet parents who make it a habit to enjoy the freedom of the outdoors, Bags On Board provides strong, reliable solutions that make the job a lot less yucky.