MY FUNGI’S PREMIUM STERILIZED SUBSTRATE IS SPECIALLY FORMULATED FOR WOOD-LOVING MUSHROOMS. THE COMBINATION OF HARDWOOD SAWDUST AND NUTRIENT-RICH SOY HULLS PROVIDES THE PERFECT HIGH-YIELDING MEDIA FOR GROWING MUSHROOMS. USE IN COMBINATION WITH MY FUNGI’S STERILIZED GRAIN FOR OPTIMUM RESULTS. GUARANTEED CONTAMINATE FREE