John & Bob’s Maximize – Microbes & Minerals is OMRI Certified. It was designed and developed to add vital minerals back into the soil that plants use. It’s terrific for the soil because it adds hosts of microbes that can transform lifeless soil into a living community that keeps bad organisms at bay. Nothing is more important for healthy soil than the composition of ingredients in this product – microbes and minerals. Apply twice per year. Maximize Microbes Minerals is designed to work with John & Bob’s Penetrate Liquid Bio-Tiller , John & Bob’s Optimize Soil Optimizer , and John & Bob’s Nourish – BIOSOL® . Shop All John & Bob’s Products here .