Salt-Away® Concentrate Gallon - Salt-Away® is a water-based salt removing product. After purchasing and using the KIT, purchasing a 128 fl oz (3.79 L) container of Salt-Away® Refill Concentrate is a recommended choice, depending on frequency of use, area to cover, and economic considerations. Product can be applied with the Salt-Away® Mixing Unit, Garden Sprayer / Compression Pump Sprayer and Pressure Washer.