Protect your home or property in times of flooding with Quick Dam Sandless Sandbags. They are ready to use. Just lay in place and let the water do the rest. Quick dams expand and activate on contact with fresh water. Growing in size to absorb, contain and divert problem water. Light weight and easy to use. Place in the path of problem water and prevent the water from entering your property. Stack multiple bags in a brick or pyramid formation to increase wall height. Keep on hand for emergency situations. Not for use with salt water.