Our desiccants contain naturally hygroscopic clay, salt and starch formula, providing superior absorption, compared to silica-based dessicants and similar products. Weighting 1kg, the dehumidifiers are able to absorb up to 800ml water at a time. Once full, in order to reuse, simply place on a radiator dry out completely. This ensures continued best performance. This is an ideal solution for frequent or infrequent road users having issues with condensation as well as consequential issues such as mould, rust and mildew.