While most other waste bags are made with plastic, these are made with plant based biopolymers that can break down in home compost*, industrial compost facilities**, and even in landfill conditions. Can be used when walking dogs, as well as cleaning out litter boxes. Durable & smell proof. 15 bags per roll.Notes:*If you choose to compost pet waste at home, it should be used for ornamentals only – not for edible plants.**Check online and inquire to see which industrial compost facilities will accept pet waste bags before bringing them in.