IRON OUT Rust Stain Remover Spray Gel, Removes Rust Stains in Bathrooms, Kitchens, Laundry, and Outdoors, No Scrubbing, Made in the USA, 24 Ounces, 3-Pack

I have a white plastic fence that looked just fine until I replaced the sprinkler pump 2 years ago. The previous owner had set up the sprinklers the easy way, i.e. put in a few heads and throw water everywhere, including against all the fences. The result was an orange and white mess.I tried the pressure washer, and it got most of it, but in several areas, it wouldn't come off, so I got on Amazon and started looking for a solution. They had a few inexpensive options, so I decided to try 3 different products.Iron Out Spray GelWhink Foaming Rust Stain Remover SprayEcoxall Oxalic AcidFirst off, all 3 will get the job done, but they have their differences. The acid came without instructions, but the instructions on the other 2 bottles are completely WRONG! Both say to spray it on, leave it there for about a minute, wipe it off, then rinse and repeat if necessary. I tried their way, and if you do that, you're going to be doing a whole lot of "repeat if necessary" and burning a bunch of elbow grease.Here's what I found works best with all 3 products. Spray it on, walk away for at least 30 minutes, come back, if there is any rust left, repeat the first 2 steps. No wiping necessary. They all leave a slight residue, so you might want to rinse it off, but it really doesn't show up on a white surface. basically, if you can pull the trigger on a squirt gun, you can get the rust off of anything.I tried them on a plastic fence, an aluminum pool cage, and a stucco wall with latex paint. The painted wall was the easiest to clean, the pool cage, the hardest. Here are reviews of each product:Iron Out - If I had to pick a favorite of the 3, this would be it, at least as far as the whole "get the job done in the least time" thing goes. In some cases, while testing, it would have the area completely clean before I could get the other two applied. It's not oily, but has sort of the consistency of oil, so it "clings" like it says on the bottle. The cost wasn't much, but only if you're looking to do a small job. If you've got a big area to clean, keep reading...Pros: Works fast, "clings", It works!Cons: Price, the lid is locked on, so you can't reuse the bottle.Whink Foaming Spray - I wasn't sitting there with a stopwatch, but this seemed to be the slowest of the 3. Having said that it works just as well as the others. The "foaming" part is fairly thin, but it's there. I found it to work best on flat surfaces, rather than walls, but will "git 'er done" regardless.Pros: Foam, It works!Cons: Price, slower than the others. The lid is locked on, so you can't reuse the bottle.Oxalic Acid - This is a powder that has to be mixed with water, and it doesn't come with any instructions, but you can find plenty of videos on You Tube. At first, I basically took 12 ounces of water and tried to see how much acid I could add before the crystals would no longer dissolve. It took about 5 tablespoons. I used a small brush to apply it at first but put it in a spray bottle later on. It will work either way.Later I mixed a batch with only 2 tablespoons of powder, which predicably did not work as well. I'd suggest using 1.5 ounces (by weight, not volume, a little over 4 tablespoons) in 12 ozs. of water.This is definitely the cheapest way to go. I did the math, and you can make about 10 - 24 oz. bottles of this for the price of 2 bottles of the others. You do have to buy a spray bottle, but if you have a garden sprayer, you can use that.One other thing, you might want to use a mask when dealing with this stuff. It's not just small crystals. It also has a fine powder that's there as well. When mixing it, if you shake the spoon or the bottle a bit that powder can get airborne. Been there, done that. It will definitely irritate the nose. Also, once it's been mixed with water, and you set your spray nozzle for a wide application, you'll get a fine mist that floats in the air. Breathing it will irritate respiration as well. Done that, too. Don't be me.Pros: Cheap, works pretty fast, It works!Cons: You have to mix it (time and irritation).Check out the photos. They're sort of self-explanatory. Also, keep in mind that I'm very lazy. The only muscle used in the making of these photos was my trigger finger.

Our house has a well-type sprinkler system, and over 20+ years our grey-green siding and white vinyl window frames turned orange-red in spots from the mineral-heavy water. I mean, RED with no original color at all. Of course, I tried other products over the years, but nothing worked. They were so weak, it was laughable, so I stopped trying. I was actually considering replacing the siding when I bought this. Imagine, paying very little money for a product that actually WORKS! Light staining faded and disappeared in under two minutes. I will need another bottle to finish the job, but at these prices, who cares? Keep in mind, Out apparently removes the stain chemically a layer at a time. For our 20 years of ground water exposure, requiring another half bottle to finish the job is nothing! The siding is now back to its original color in most of the spray pattern and looks shiny and clean with no damage; in fact, it's now smoother to the touch with the stains gone. The stain had also colored the lower half of a window frame, and even that is sparkling again! Out did no damage at all to the light-blocking window screen in the frame. Although the directions suggest rubbing with a cloth, I didn't see any improvement over spraying, then waiting and spraying then waiting. So a cheap product that works perfectly with zero labor--where do I buy stock???--I received absolutely no compensation for this review.

I have rusty well water and feel like I have tried every product on the market for rust stains over the years. This is BY FAR the best product I have ever used on rust. No scrubbing necessary, just spray, let sit for 30 seconds or so, and wipe away the rust with a rag. I have used it on metal drains, plastic shower doors, and ceramic tile, and it works equally well on all surfaces with no damage. I highly recommend this product.

Had to get these yellowish orange brown spots on my marble countertop and nothing was working from iron skillet. This product took 2 to 3 times and that third time was a charm. Remember, some surfaces need for this product to sit on stain a little longer than recommended on the bottle. Instead of waiting a few seconds; because it didn’t work after I waited 10 seconds then wiped it. I then did it over & waited a full minute and that’s when I had the best results.

10 stars if I could! I have been fighting this shower since we moved in 4 years ago. I've tried every hard water product we could find, magic erasers, steel wool, elbow grease, drill attachments... you name it I tried it. And nothing seemed to even dent the problem. I saw this advertised and figured it was worth a shot. I AM SO HAPPY!! Within a minute it started to work. No scrubbing... it just dissolved. I used a sponge to lightly wipe the IronOut around and it took off every last bit. I have never seen this shower white and I can't even begin to tell you how thankful I am. I have felt embarrassed and like a bad home owner because I couldn't get it clean, but now I am SO relieved! If you have the orange colored stains from your water, you will NOT regret this purchase!!

OMG! This stuff is AMAZING! I have a plastic outdoor shed that gets sprayed by my well water irrigation system daily. Over the years it built up a bad "rust" layer, I tried blasting it with a pressure washer (green nozzle) - nope, barely made a dent. I tried scrubbing with Spray Nine, nope - no effect at all. I just sprayed this stuff on and WOW! Before I could even finish spraying ALL of the rust was GONE, completely! And as a side benefit I have plastic door handles that had oxidized and I noticed when I sprayed them it removed the oxidation (I'm in the process of removing oxidation from some plastic deck boxes using other products, I'm definitely going to test this and see if it works!). I wish I had taken photos of before/after to share - but trust me, this stuff REALLY works! I just ordered 2 more bottles!

I expected a gel but it's a watery liquid