Grangers Tent + Gear Care KitGrangers Tent + Gear Cleaner is a sponge on cleaner designed to clean dirt, dust, pollen, and all other performance impairing impurities from outdoor gear. Over time, and with prolonged use, even the best outdoor gear will begin to lose its ability to repel water. That's because residues and impurities that settle on your gear all absorb water. As your equipment gets dirtier, the more water it absorbs, leaving it much more likely to leak. Grangers