Bags on Board Black Waste Pick-Up Dispenser With Refill Bags Make dog clean-up a walk in the park with this fun, black bone-shaped bag dispenser. Designed to release one strong, leak-proof bag at a time, the sturdy design of the dispenser attaches to any leash so you will always have your bags with you wherever you go. Stop over-poop-ulation by doing your part. If not disposed of properly, the bacteria found in pet waste can pose health risks to people and pets. The Bags on Board Pick-Up Dispenser comes with a roll of 30 refill bags..