Use with All free/clear fabric softener and dryer sheets for clean and soft clothes with static cling reduction in the dryer. All free/clear mighty pacs are unscented, fragrance free, and are safe to use in any washing machine including high efficiency (HE) and they dissolve completely even in cold water. Add pac(s) to washing machine drum before adding clothes. Use 1 pac for small and medium loads or 2 pacs for larger loads then wash as usual. All mighty pacs are safe for septic systems and contain no phosphates. This pack contains one pouch of 39 All free/clear mighty pacs, enough for 39 regular loads of laundry.