The #1 Heavy-Duty Rust Stain Remover

Iron OUT®, the #1 heavy-duty rust stain remover powder, is specifically formulated to easily rinse away the toughest rust stains, eliminating the need for scrubbing. This multi-purpose and versatile powder is perfect for use in removing and preventing difficult rust stains in bathrooms, kitchens, appliances, laundry, water softener maintenance and many more applications in and around the home. Ideal for geographic regions with hard water and high iron, Iron OUT is best on rust!

Available in 1 lb 12 oz, 4 lb 12 oz and 9 lb 8 oz sizes.

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Bathtub and Sink Rust Stain Remover

This multi-purpose rust stain remover powder safely and effectively works on most surfaces in and around the home including fiberglass, porcelain and acrylic. Iron OUT is ideal for removing heavy-duty rust stains from bathtubs, sinks, showers, toilets and more.

Remove Rust Stains In Toilet Tanks

Iron OUT is tested safe for use to remove rust stains from toilet tanks. Simply add Iron OUT directly to toilet tank, allow to set overnight then flush several times to clear the tank. Iron OUT also safely and effectively removes rust stains from the toilet bowl.

Water Softener Iron Removal

This unique formula can be used for water softener iron removal. Simply layer between bags of salt to keep your water iron free. See full instructions in “How to Use” below.


How Often to Use: Use Iron OUT when new rust stains appear inside or outside your home.

Non-Compatible Surfaces/Materials:

Iron OUT is not recommended for use on:

  • Wood
  • Cars (including parts like the radiator)
  • Painted Materials
  • Exposed and Corroded Rusting Metal

Note: Always test in an inconspicuous area before using Iron OUT.

Performance Guaranteed. All of our products have a money–back guarantee, promising that every product will meet or exceed your expectations. If you’re not satisfied with product performance, mail your register receipt along with UPC to Summit Brands for a full refund.

Septic safe.

Made in the USA.

Directions For Use

Read entire label before using. Always pre-test in an inconspicuous area. For stubborn stains, increase dosage and/or contact time.

Bathtubs, Sinks, Tile Rust Stain Removal
  1. Wet area to be cleaned.
  2. Apply powder to damp sponge or cloth.
  3. Rub lightly until stains are gone. Rinse with ambient water.

Note: Not recommended for older, worn or chipped porcelain cast iron fixtures.

Toilet Bowl & Water Tank Rust Stain Removal

Remove cleaners or deodorant from bowl or tank. Flush.


  1. Add 1/2 cup to water in bowl.
  2. Scrub stained area with brush.
  3. Let stand until stains are gone. Flush.


  1. Raise water level above stain line if possible.
  2. Add 1/2 cup.
  3. Let stand overnight or until stains are gone.
Water Softener Rust Stain Removal

All softeners on iron-bearing water require Iron OUT as preventative maintenance and to eliminate iron buildup.

First Application

  1. Dissolve 1 cup in 1/2 gal. cold water.
  2. Pour directly into brine well (for softeners with no brine well, pour directly into salt tank when salt level is low).
  3. Manually regenerate softener. Repeat for heavily fouled unit.

Regular Use

  1. Add 1/4 cup per 40 lbs. of salt.
  2. Layer for continuous treatment.

Cabinet Models


NOTE: If taste or odor is detected in tap water, manually regenerate softener, then run cold water until odor is gone.

White Laundry & Fabrics/Laundry With Color Or Embroidery Rust Stain Removal

NOTE: Do not use with peroxide, bleach, bleach-detergents, oxi-stain removers or oxi-detergents.


  1. Add 1/2 cup to warm water as washer is filling (for front loading machines add to the detergent drawer).
  2. Add clothes and let soak for 5 minutes (if possible, with soak cycle or by stopping machine).
  3. Add detergent and resume wash/rinse cycle.
  4. Dry as usual.


Test all colors before using. Use only on colorfast dyes.

Note: Wash each item separately using the white clothes instructions.

Caution: Product may irreparably damage colors and embroidered logos.

Dishes, Glass, Plasticware Rust Stain Removal
  1. Dissolve 1/3 cup in 1 gal. of warm water.
  2. Soak articles 5 min., or until stains are gone.
  3. Rinse thoroughly. Repeat as needed.
Dishwasher / Washing Machine Rust Stain Removal
  1. Add 1/2 cup to EMPTY machine.
  2. Run machine through normal cycle using water only. Repeat as needed.

Note: Do not open machine mid-cycle.

Exterior Surfaces Rust Stain Removal
  1. Mix 1 cup into 1 gal. warm water.
  2. Wet surface with clear water.
  3. Apply with brush or sponge.
  4. Keep saturated until stains are gone. Rinse.

Note: Avoid contact with vegetation.

Precautions And Safety

  • Do not mix with other chemicals.
  • Use only with adequate ventilation. Avoid breathing in vapors after mixed with water.
  • A person with respiratory problems or sulfite sensitivity should not use this product as vapors may impair the ability to breathe.
  • Rubber gloves are recommended when using this product.
  • Avoid contact with eyes and skin.
  • Do not ingest product.
  • Keep out of reach of children.

For more product information, see our Safety Data Sheets (SDS).


+ What does Iron OUT® do?

Iron OUT® is the number one heavy-duty rust stain remover. It is designed to change rust and iron into a clear solution that easily rinses away, thus eliminating the need to scrub difficult rust stains. This multi-purpose powder can be used on virtually all surfaces in and around the home and can also safely whiten white clothing and provide cleaning maintenance for water softeners.

+ What does Iron OUT do in a water softener?

Iron OUT cleans the mineral bed and removes heavy-duty iron buildup that reduces the softening and recharging efficiency of the water softener resin. The product is backwashed from the system after the cleaning is complete and regular drinking water is resumed. Iron OUT keeps a water softener cleaned and maintained, working effectively and lasting longer.

+ Will Iron OUT remove manganese stains?

Iron OUT may remove manganese stains if used in a higher concentration. Make a paste; apply for 10 minutes and rinse. May be re-applied if necessary.

+ Where can I purchase Iron OUT?

The Summit Brands product line is available for purchase through national retailers, both in stores and online; some products may also be available for purchase through our website. Use the “Where to Buy” button to locate online and local retailers who carry this product or begin your purchase through the site.

+ How do I use Iron OUT on a vertical surface?

Wearing basic cleaning gloves, simply apply Iron OUT to a damp sponge or cloth and wipe the stained surface. You may also make a paste and apply directly to the surface. Iron OUT Spray can be used for quick and easy application as well.

+ Can I use Iron OUT on concrete?

To use Iron OUT on concrete, dilute by adding 1 cup of product to 1 gallon of warm water. Use a firm bristled brush or broom to work product into the concrete. Keep area saturated with water and allow product to set until stain is gone. Reapply as needed. A garden sprayer may also be used if necessary. Be sure to keep the surface wet where the Iron OUT has been applied to keep the product alive. When you are ready to rinse, avoid vegetation. If the product comes in contact with vegetation, take a garden hose and wet down the areas of vegetation that Iron OUT contacted, which will help achieve dilution of the product, because the product can harm vegetation.

+ Is Iron OUT safe for use in a dishwasher?

Iron OUT can be used to remove rust stains from the dishwasher interior. Add 1/2 cup Iron OUT to the detergent dispenser or directly to the bottom of the dishwasher. Run an empty dishwasher on a normal cycle.

+ Can I use Iron OUT to clean my toilet tank, and is it safe on my Styrofoam liner and seals?

Iron OUT can safely be used to clean rust stains from the toilet tank. Add 1/2 cup Iron OUT directly to the toilet tank before going to bed and allow to set overnight. In the morning, flush the toilet a few times to aid in clearing the tank. Iron OUT is safe on all Styrofoam liners and seals and working components in the toilet.

+ Is Iron OUT safe for use in a toilet bowl?

Iron OUT can safely be used to remove heavy-duty rust stains from the toilet bowl. Add 1/2 cup Iron OUT to the bowl and allow the product to set until stains are gone. For stains above the water line, make a paste and directly apply with a sponge, cloth or brush. Allow the paste to remain as long as it takes to remove the staining, then flush. Be sure to scrub the rim of the toilet as well.

+ Can I use Iron OUT with white clothing?

Iron OUT effectively removes yellowing from white laundry caused by iron-laden water. Be sure to separate any clothing with a dye or color in it from strictly white clothing, as Iron OUT should only be used on white clothing and colorfast fabrics. ALL COLORED ITEMS MUST BE TESTED FIRST. Follow label directions for dosage.

+ How would I use Iron OUT to wash dishes, glassware and plastic ware?

Iron OUT can be used to clean dishes. Simply fill a basin size plastic container with warm water and add about 1/3 cup of product. Allow dishes to soak 5 minutes or as long as it takes to remove stains. Rinse well with soap and water.

+ Can I use Iron OUT in swimming pool water?

Iron OUT is not recommended for pool water because it is a skin and eye irritant and is difficult to filter out of the pool once added. Iron OUT can also have a negative reaction with chlorine. Iron OUT is safe to use in an EMPTY pool to remove staining from walls, liner, etc. and should be rinsed thoroughly before filling the pool.

+ Can I use Iron OUT on flatware?

Iron OUT is not recommended for flatware, as it can cause discoloring.

+ Can Iron OUT be used in a greensand filter?

Iron OUT is not intended for use in a greensand filter. Product can strip the carbon from the greensand.

+ Can Iron OUT be used in a sump pump?

Iron OUT can be used in a sump pump. We recommend using about 1lb for every 5 gallons of water.

+ Is Iron OUT safe for use in an iron or steam iron?

Iron OUT should not be used in an iron or steam iron. Try white vinegar instead.

+ Can I use Iron OUT on my hair?

Iron OUT is not recommended for use on hair as it can cause damage.

+ Can Iron OUT be used to clean filters?

Iron OUT can be used to clean pool filters and cloth filters. Iron OUT should not be used on any filter containing a media or for sediment filters. Always follow the manufacturer’s recommendations in cleaning filters, as there is no way to know if the product is completely flushed out of the potable water lines.

+ Is Iron OUT safe for use in a well?

Iron OUT is not recommended for use in a well. Please contact a well driller to inquire about well maintenance.

+ Can Iron OUT be used on a car or in a car radiator?

Iron OUT is a rust stain remover and is not safe for use on exposed rust or rusting metal. Iron OUT is not recommended for use on cars or to flush closed systems, such as car radiators.

+ Is Iron OUT safe for use in a water heater?

Iron OUT is not recommended for use in a water heater.

+ Is Iron OUT safe for septic systems?

When used as directed, Iron OUT is septic safe and will not harm the bacteria within the system or prevent future bacterial growth.

+ Can Iron OUT be used to clean a coffee maker?

Iron OUT is not recommended for use in a coffee maker only because it can be difficult to completely rinse out. Try white vinegar or lemon juice instead.

+ If my softener is not regenerating properly and I can smell or taste Iron OUT in my water, what should I do?

Iron OUT can be flushed from the lines by going to the faucet closest to the water softener and allowing the cold water to run. After the odor is gone, turn on other faucets in the home for a short time to make sure the product has been eliminated from all the lines.

+ Why isn't Iron OUT NSF approved?

Iron OUT is not added to drinking water; instead, this product is a resin bed cleaner. Each softener has a discharge phase. In this phase, per cubic foot, 40-60 gallons of fresh water is flushed through the system and Iron OUT is completely washed out during this phase. Therefore, it is not NSF approved.

+ When using Iron OUT in my water softener, will the product get into my drinking water?

When used as directed and in a properly working water softener, Iron OUT will not enter your drinking water. Iron OUT does not harm your drinking water, the same way the salt in your system does not harm your water supply. Every softener has a mineral bed that water passes through. The mineral bed catches the hardness and iron particles found in the water. When the mineral bed gets compacted with particles, the softener goes into regeneration mode. During regeneration, the water supply goes into bypass mode. The salt brine and Iron OUT are drawn into the mineral bed of the softener and they remove the hardness and iron particles from the mineral bed. This is flushed down the drain, then 40-60 gallons of fresh water is flushed through the water softener and sent down the drain. Finally, the water softener goes back into service for everyday usage. If you should ever smell or taste chemical in your water, the lines should be flushed and we recommend contacting a water treatment specialist to service your softener.

+ Can Iron OUT powder be diluted with water and used in a spray bottle?

Iron OUT powder should only be diluted with water in an open container, such as a plastic bucket, utility sink, washing machine, toilet bowl or bathtub. When Iron OUT comes in contact with water, a chemical reaction produces an off gas, which if enclosed could cause bursting issues. If a liquid spray is desired for application, we recommend using Iron OUT Spray.

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