ISF silage preservatives provide a unique mode of action utilizing sulfur compounds that in the presence of moisture and plant acids retard the growth of undesirable aerobic bacteria and fungi (molds and yeast), thus saving available sugar for lactic acid production. The sulfur compounds act as oxygen scavengers which rapidly stop the growth of undesirable bacteria, molds and yeast. Silo Guard II provides a combination of sulfur compounds, enzymes and sugars that act as a fermentation aid and mold and yeast inhibitor with application across all forages. Hay Guard®** is specifically formulated for hay application and provides a combination of sulfur compounds. Ration Guard®** is another offering providing a patented means to inhibit mold growth and limit secondary fermentation in grain mixes and total mixed rations. For those seeking a certified-organic option, ISF's Eureka™** provides a dry applied option for all forage types. Silo Guard®** II is available in both dry and direct liquid-applied forms. Hay Guard is available in liquid application. Eureka and Ration Guard are available in dry-applied form.