Quick Dam 10ft Water Activated Flood Barriers, absorb, contain & divert problem water. Each barrier absorbs 8.5 gallons of water and the inner contents gel to create a barrier. Quick Dam barriers reach their full height of 3.5 inches in under 10 minutes with enough water present. Keep these Quick Dam Flood Barriers on hand for quick and easy use and be prepared for flooding, leaking and water damage indoors and outside! Use in front of doorways, windows, entryways, divert problem water, erosion control and more! They are safe, nontoxic, nonhazardous and can be disposed of in the trash, or left in place for a season of ongoing protection. The built in wedge prevents them from rolling and they can be stacked to create a stable wall. They have a 10+ year shelf life not activated and weigh less than a pound not activated. A great alternative to traditional sandbags, with no sand or labor needed!