Virkon is the ultimate disinfectant for aquatic applications. It is independently proven to be highly effective against significant aquatic pathogens and is used around the world. It is considered by many experts to be the best choice for reducing the spread of fish pathogens. As outlined in the Virkon  MSDS, once the powder is mixed with water, the working solution is non-irritating to skin and eyes. This is a significant worker safety advantage over many other disinfectants. Before mixing into solution, the power is corrosive and irritating so please follow label directions.