Palmetto Golf 500 Ct 4" Professional Biodegradable Sod / Landscape Stake and Fabric Pin - Eco-Friendly - MADE IN THE USA - Many Uses in the Lawn, Garden, Landscape and Patio Made in the USA with from 100% Recycled Resins. Designed to hold down BMP of all kinds. Holding power unmatched by metal or wood stakes with the soil grabbing rib design, stakes stay put in the ground when frost heave happens. These stakes are compliant with ASTM D-6954 degradability standard. Contractor Friendly. Engineered to be Durable and OUTPERFORMS METAL STAPLES! Safety: Safer than metal stakes, remain in the ground during all weather conditions. Avoid hazardous situations where metal staples are exposed to lawnmowers! 4 - 6 Times the holding power of metal stakes. Ribbed design collects soil preventing protrusion from the ground. Breakdown and Biodegrade into water, carbon dioxide and humus in regular environmental conditions.