The leak-proof SafeNDry bags do not collect any moisture inside a container. Instead, it absorbs all the water present inside the bags. They adsorb excess moisture and prevents the formation of tough odour inside confined spaces. SafeNDry Bags consist of natural ingredients that are safe, non-toxic and FDA approved. Each bag is fitted with a unique blend of moisture adsorbing material to prevent mould, mildew, corrosion, and rust. When at a relative humidity (R.H.) of 5%, SafeNDry Bags will start adsorbing moisture, maintaining it at below 30%. Each bag can last up to 4 months depending on the climate and level of humidity present in confined spaces.