Dry Brik II features a more aggressive sorbent than previous dry briks and a novel timer called Timestrip. Once started by the user, a thin red line lengthens each day, and when the timer window is completely red (2 months), the depleted Dry Brik should be replaced with a newly-activated one. The Timestrip has been custom-designed for the temperature range of the Dry & Store product line, making color-changing cards and crystals unnecessary. The Dry Brik II is packaged in 3 packs so that you can dispense a 6 month supply. Convenient to store and dispense.