Filtrexx® EnviroSoxx® consist of sediment control devices with one or more natural additives used to remove invisible pollutants, including heavy metals. Filtrexx® Heavy Metals Removal is a natural ionic absorbent that is used with Filtrexx® storm water pollution prevention practices, such as sediment control, check dams, inlet protection, biofiltration and bioretention systems. It is ideal for reducing metals loads (i.e. Cadmium, Chromium, Copper, Nickel, Lead, Zinc) in urban and post construction storm water runoff.