A good poop bag is thick enough not to tear, long enough to knot easily, and honest about whether it is truly compostable. We compared everyday value rolls against certified compostable options.
What separates a good bag from a bad one
The failures owners remember are tears and leaks, so density and length carry more weight than price. A heavier gauge resists punctures, and enough length lets you knot a secure, odour-tight seal. Dispenser fit is the small detail people forget: match the roll core to the clip you already own.
On the eco question, only bags with a recognised compostable certification break down properly, and usually only in an industrial facility. Many bags marketed as degradable are still plastic. Decide whether certified compostable matters to you, then choose the strongest option in that category.