I use peracetic acid in a weak solution (it's commonly used by the dairy industry) to sterilise my chiller and the surface of the work bench used for breaking down deer carcases. It's readily available in the farm shops and co-operatives locally. Peracetic Acid 5% is completely biodegradable, breaking down into harmless by-products. Peracetic Acid 5% is Free rinsing and non tainting and is suitable for fogging and CIP disinfecting. Peracetic Acid 5% is a highly effective biocide killing a wide range of micro organisms and at low levels it rinses away completely. Hope this helps.