Cleanairâ„¢ Pack, releases chlorine dioxide on a controlled basis to inhibit the growth of bacteria & fungi that form slime & cause odors in the food zone of ice machines, includes: (6) replacement packets, (1) basket, (2) thumb screws, for use in Q & S-series ice machines only, cannot be used with S-3070C, S-3000, Indigo, nugget, flake, or undercounter ice machines, NSF