10 Lb. Concentrated Strength-Makes 40 Lbs. Certified Organic/VEGAN/Non-GMO/Sustainable Earthworm Castings. High Microbial activity. High in Calcium & Iron. Master Gardeners Choice. 10 Lbs. Concentrated Strength - Makes 40 Lbs. Certified Organic Approved/High Microbial Activity Odorless / High Water Retention Safe around People & Pets / Eco Friendly / AVA Recommended / Non-GMO / Sustainable Significantly Higher Yields/Bigger,Tastier veggies/Larger, more colorful blooms