Indigo HydroForce Evolve Soil Penetrant Surfactant Wetting Agent 1LHydroForce Evolve is a true soil penetrant, consisting of an anionic soil amending additive, which modifies surface tension of the hygroscopic (bound) water in the soil profile. Key Features Improves water infiltration and penetration in all soil types, but particularly effective on loams and clays. Enhances soil aeration. Ideal for use in the winter months to keep the rootzone from becoming over saturated. Eliminates wet dry spots. Highly tank mix