NasaKleen Squeeze Nasal Rinsing System provides relief from symptoms of allergies, colds, the flu and sinus-related infections. Made of super flexible material for single-squeeze action with minimal pressure required. Kit comes with Squeezie device, 50 pre-measured packets of salt and instructions. Use distilled, sterilized or filtered tap water (use a filter with an absolute pore size of 1 micron or smaller) to mix the Nasaline salt. Use distilled, sterilized or filtered tap water (use a filter with an absolute pore size of 1 micron or smaller) to mix the Nasaline salt. Once mixed, use the saline within 24 hours or discard.