Weed Warrior .080X50' All Purpose Trimmer Line is biodegradable and durable. It's scientifically engineered to be more durable than other residential grade trimmer lines. Using innovative technology, we’ve created a nylon trimmer solution that is not only tougher, but also biodegradables *60x faster than conventional trimmer line in an anaerobic landfill. You can have line that lasts longer while cutting and degrades faster when you’re done. *49.5% biodegradation within 2 years via ASTM D5511 test method in an anaerobic landfill. Anaerobic landfills may not exist in your area. Note that stated rate and extent of degradation do not mean the product will continue to decompose. Trimmer line remnants left in the yard may not experience this same level of biodegradation. Not for sale in CA, MD, MI, or WA.