Quick Dam Flood Bags Water Activated Flood Bags - Absorb, control, & divert flood water. Protect your home or property in times of flooding with Quick Dam sand less sandbags. They are ready to use. Just lie in place and let the water do the rest. Quick Dams expand and activate on contact with 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 to increase wall height. Keep on hand for emergency situations. Protect Against storm surges & water main breaks, overflowing appliances & equipment, leaking equipment & water tanks, broken sprinkler heads, A/C condensation overflow, spills, leaks, floods, drips & more.