EarthWorks - BioVantage Carbon-Based Biological Complex - 2.5 galEasy to use for amazing results that make you look like a horticultural genius (even if you're not). BioVantage is a unique synthesis of eight strains of Rhizobacteria combined with a powerful carbon based food supply. By pairing proven microbial inoculants with nutrient rich carriers like fish and kelp meal, BioVantage reinvigorates tired soils, boosts microbial activity, and strengthens the plants root system for long term turf performance.