Gard'nClean Liquid Mix Disinfectant - (makes 12.5 Gallons at 100ppm) - Case of 10Best in class Chlorine Dioxide (ClO2) Sanitizer, Disinfectant, Line Cleaner, & Continuous Water Treatment GC Liquid produces an OMRI listed, 99. 9% ultra pure ClO2 at point of use, requiring only water, a sealed generation vessel, and our state of the art microreactor. ClO2 is the worlds only selective oxidizer, meaning it has a high oxidation potential, but a low oxidation strength. This unique structure is why ClO2 is such an efficient biocide