How long does Cocofloss last? June 03, 2021 14:54 Updated Each Cocofloss spool is 33-yards. Flossing daily, using approximately 18" per day, Cocofloss will last two months. Related articles How thick is Cocofloss? Does Cocofloss have a recommended shelf life? Is Cocofloss biodegradable? How do I insert Cocofloss refills? Are Cocofloss aromas all natural?