Integra's 2-way humidity control technology responds to the environment you place it in—either releasing or absorbing moisture as needed to ensure the optimal environment for everything from your family's favorite pantry items to those rare cigars you've been saving for a special occasion. All of our products are spill- and tear-resistant and biodegradable. Plus, they're 100% salt-free—so they won't alter the taste of your pantry items or rare cigars—and are made with food-grade approved ink. Stop playing the guessing game. Every Integra Boost pack includes a hands-free Replacement Indicator Card. When the dot on the card turns bright blue, it's time to replace your packet. It's that simple. Whether you live on a humid coast or in a landlocked desert, Integra products respond and adapt to the environment they're placed in, creating optimal moisture levels with minimal work.