Comparison, updated 2026-11-14

SpraySticks vs Iron OUT: which rust stain remover should you buy

Short answer: Iron OUT is the easy pick when you want one ready-to-use jug off a store shelf today, and its 128 oz Outdoor jug is one of the cheapest gallons around. SpraySticks fits better when you want a pre-measured dose for your own spray bottle or sprayer, color-coded lines and refills that ship dry instead of shipping water.

Side by side

Prices below are retailer listings we checked in November 2026. Listings change often, so check the store before you buy.

How each one is sold

Iron OUT is a household name from Summit Brands. The outdoor product comes as a ready-to-use liquid, so you open the jug and go. The brand also sells powder products for other cleaning jobs around the house, but for a stained driveway or a streaked fence most people reach for the outdoor jug. That simplicity is real value. Nothing to dissolve, nothing to measure, and it is already on the shelf at the store you were going to anyway.

SpraySticks takes the opposite approach. You buy only the active part, in a dry stick or pod, and supply the water yourself. A stick drops into a 16 to 24 oz spray bottle you already own: one stick for light rust, two for heavy stains. Gallon pods go into a pump-up or backpack sprayer: one pod per gallon for heavy stains, or one per gallon and a half for light ones. Four pods fill a standard backpack sprayer. The dose is set before it reaches you, so there is no guessing at strength.

What a finished gallon costs

On sticker price per gallon, Iron OUT wins. At $9.99 for 128 oz, it is about $10 a gallon ready to spray. Our gallon pods come close but do not beat it at heavy strength. The Backpack Pack is $49.99 for 4 gallons, about $12.50 a gallon. The Pro Pail is $249 for 24 gallons, about $10.38 a gallon. At light strength, one pod stretches to a gallon and a half, which drops the pod cost to roughly $8.33 a gallon with the Backpack Pack and about $6.92 with the Pro Pail.

Our spray bottle sticks are a different product. One tube makes one full-strength 16 oz bottle, so on a per gallon basis they cost far more than any jug. They exist for the person with three rings on the patio or a streak under a boat cleat, who does not want a gallon jug sitting in the garage for two years. For a full price breakdown across brands, see our cost per gallon comparison.

Shipping, storage and carrying

Water is the heaviest part of any ready-to-use cleaner. A gallon of liquid weighs a little over 8 pounds, and four gallons for a backpack sprayer is more than 33 pounds to carry from the car. When you buy in a store, the retailer has already paid to truck that weight in. When liquid cleaners ship to your door, the freight cost shows up somewhere in the price.

SpraySticks never ships water. That matters most for people who order online, live far from a hardware store, or keep supplies on a boat or in a work truck where space is tight. A tube of sticks fits in a glove box or a dock box. A jug does not.

Sprayer fit

For a few stains, Iron OUT in its own container or poured into a spray bottle works fine. For a whole driveway, a long run of fence or the side of a house, most people move to a plastic pump-up or backpack sprayer. That is where measured pods help. You fill the tank with water, drop in the right number of pods and let them dissolve. There is no pouring four heavy jugs into a narrow tank opening. See the pump sprayer guide for setup, and use plastic sprayers only, since brass and steel parts corrode.

Surfaces

Both products target the same common jobs: orange irrigation stains, fertilizer dots, rings from metal furniture and streaks from rusty hardware. Our surface guides cover dwell time and rinsing for concrete, pavers and pool decks, sprinkler and irrigation stains and vinyl siding. SpraySticks also has a marine line for gelcoat and a car line for wheels and chrome, each with its own water color so bottles do not get mixed up. Iron OUT is mainly sold for the house and yard.

Where Iron OUT wins

• Availability. It is on the shelf almost everywhere. If the stain needs to be gone before guests arrive tonight, that beats any online order.
• Price per gallon. The outdoor jug is one of the cheapest ready-to-use gallons we found.
• Brand history. It has been around for years, and many people already know how it behaves on their own concrete.
• No prep. Open and pour. No waiting for anything to dissolve.

Where SpraySticks fits better

• Measured doses. Each stick and pod is pre-measured for a set amount of water, so the strength is the same every time.
• Dry refills. You keep the same bottle or sprayer and only buy the dry part.
• Color coding. Blue, green and red water tell you at a glance which bottle is the hull cleaner, the patio cleaner or the wheel cleaner.
• Big sprayer jobs. Pods are sized for pump-up and backpack sprayers, and the Pro Pail suits people who clean often.

Safety, whichever you choose

Same compound as spinach. Way less friendly than a salad.

Both are corrosive cleaners, so treat them with the same care. Wear chemical-resistant gloves and eye protection. Wet nearby grass and plants before you start and rinse them well after. Test a small hidden spot first, since some concrete and coatings lighten. Never mix any rust remover with bleach or other cleaners. Do not use either on marble, limestone, travertine or other natural stone. Read the label and the safety data sheet for each product before you start. Ours is on the SDS page.

Which to buy

Buy Iron OUT if you have one job, you are near a store that carries it and you want the lowest price per gallon today. Buy SpraySticks if you clean rust stains more than once a year, use a sprayer, want doses you do not have to measure, or keep supplies on a boat or in a truck. You can see every size on the shop page. For other match-ups, read SpraySticks vs RustAid or our list of Iron OUT alternatives.

Spinach check: SpraySticks shares a compound with spinach. That does not make it food or gentle. Gloves, eye protection, keep kids and pets away, never mix with bleach, and read the SDS.

Common questions

Is Iron OUT cheaper than SpraySticks?

Per gallon on the shelf, usually yes. The Iron OUT Outdoor 128 oz jug was listed at $9.99 at Farm and Fleet when we checked in November 2026, which is about $10 a gallon. SpraySticks gallon pods work out to about $10.38 to $12.50 per gallon at heavy strength and less at light strength. If you are already at a store that stocks Iron OUT, the jug is hard to beat on price for one job.

Can I put Iron OUT in a backpack sprayer?

You can pour any ready-to-use liquid into a plastic sprayer, but a 4 gallon backpack means carrying four heavy jugs home and pouring each one into the tank. SpraySticks pods are pre-measured for that job: one pod per gallon of water for heavy stains, so four pods fill a backpack sprayer. Whatever you use, pick a plastic sprayer, since rust removers corrode brass and steel parts.

Which one works better on sprinkler stains?

We have not run side by side tests yet, so we will not claim one beats the other. Both are made to lift orange rust stains from concrete, siding and fences. Results depend more on how old the stain is, how long you keep it wet and how well you scrub, than on the brand. We will post our own before and after photos with method details once our tests are done.

Where can I buy each one?

Iron OUT is on the shelf at most hardware stores, farm stores and big box chains, which is its biggest advantage. SpraySticks is sold online from our shop and ships dry from Merritt Island, Florida. If you need to clean a stain this afternoon, a store jug gets you started sooner. If you plan ahead or clean often, ordering dry refills saves carrying water home.