Quick Dry Flood Barrier - $34.99 2/$60 The Flood Barrier is ready to use - no sand, labor or mess - just add water. Super absorbent powder inside swells, gels & creates a barrier. Stack multiple barriers to quickly build a retaining wall. Lay across driveways, in front of garage doors or in the path of problem water. Compact & lightweight for storing & carrying. Barrier naturally decomposes over time. Not for salt water flooding. 5 feet long. Re-usable. Made in USA.