– Jumbo refill 1-pack – Up to 4 months of supply - Ultimate odor control dog poop bagsUltimate odor control multi layer refill bag with odor locking barrier technology that prevents odors from escaping. Fits various dog waste Dog waste, dog poop bags, dog diapers, training pads and dog litter. Long lasting One refill lasts up to 4 months for one pet. Easy to use Refills are easy to insert, easy to dispose of. Flexible Square refill contains continuous film, allowing you to cut and tie it to any length.