They have been triple rinsed but still contain glyphosate residue. They can be used for bulk storage, leftover spray mix when I'm changing products, rinse tanks, deer blinds, septic tanks, trash cans, waste oil-antifreeze. They are sturdy enough, could probably be used as a sprayer tank. Dimensions are 40wide x 44wide x 48tall. Selling them for 75.00 each.