Our highly effective preventative solution can be injected into the well water and sprinkler water and will greatly reduce or eliminate the iron sulfide staining. With specially formulated rust inhibitors this product will help to prevent water stains on walks and walls. designed to help neutralize the iron in well water irrigation systems, so that rust stains are less likely to form on walls, walks, lawn furniture and other surfaces. Automatically prevents sprinkler rust stains from forming. If you have well water and you use your sprinkler system you probably have rust stains on your walls, walks, shrubs, lawn furniture, fences and any other surface in the sprinkler's path. This is a HEAVY-DUTY formulation. More than 3X the strength of any other ANTI-RUST product. Dilution: 1 gallon (128 Oz.) of Sprinkler Treatment will treat 125,000 gallons of water with 1 ppm iron.