Rust Stain Remover - Non-caustic formula (1L)

This stuff works very well. I had some rust stains on my flagstones from remodeling the house and leaving radiators on them and the product took it right off. There were some deep old rust spots that required 2 treatments but it still worked. It turns the rust purple as it works and when you go to flush it off the purple color will come back again as it is still working on the rust deep in the pores of the concrete so you have to rinse it, wait a bit, rinse it, wait a bit and do that about 5 times until it is all gone. It looks great now! Don’t waste your time on the small bottle as it does not go very far.

Used this on my resin driveway with no adverse effect on the surface. I tried it first in an inconspicuous area which was fine It has cleared most of the rust stain, left by a skip, with one coat. I have ordered a second bottle which will clear it completely. Very happy. Easy to apply, just put it on the stain, wait for 15/20 minutes (it turns a purple colour when it is working as it reacts with the rust) and then rinse it off. Job done.

Works brilliant, took several attempts but finally the stain has gone

Review of LTP Rust Stain Remover - Non-caustic formula (250 ml) The LTP Rust Stain Remover is a great product for anyone dealing with stubborn rust marks on stone, porcelain, or ceramic surfaces. I was initially skeptical about its effectiveness, but this remover genuinely works wonders. The application is straightforward: you apply the gel-like formula directly to the rust stain, let it sit for about 15 minutes, and then rinse it off. I noticed a visible change in the stain's intensity after just one application. The key is its non-caustic formula, which is a huge plus as it means less risk of damaging the surface you're treating. Many other rust removers on the market use harsh chemicals that can cause discoloration or etching, but this one is gentle yet powerful. I've used it successfully on my outdoor patio, which had developed several rust spots from a metal garden chair, as well as on some porcelain tiles in my bathroom. The stains disappeared completely without leaving any residue or harming the surrounding material. For older, more set-in stains, I had to do a second application, but the results were just as impressive. The 250 ml bottle might seem small, but a little goes a long way. The gel consistency ensures that it stays put on vertical surfaces and doesn't run off, which reduces waste. While it's a bit pricier than some generic cleaners, the targeted effectiveness and peace of mind from its non-caustic properties make it well worth the investment. This product truly delivers on its promise and is a must-have for maintaining the pristine look of your stone and tiled surfaces.

It took away some of the rust and it did remove a fair amount however, despite the coverage on the side of the bottle, it did not cover anywhere near as much. more like 1mx1m coverage.

DO NOT USE ON LIMESTONE!!! We had lots of rust stains on our newly laid patio from the fertiliser we used on our grass which was spread by the sprinkler. Something we definitely don’t do anymore. We tested LTP Rust stain remover on a few slabs and it worked really well, removing the rust stains dots. It specifies it can be used on limestone. We washed it off several times. As it got hot we left the rest of the patio. Over the next couple of days the slabs started to get blue green marks on them. I rang the company and submitted some photos. I was told it was the residue of the remover and I could use more on it which should get rid of it. After waiting for it to cool down we did as was suggested and our patio slabs are now worse. It has ruined our a lot of our patio area as they are covered in blue and green marks which look like mould. The chemical has penetrated into the limestone as this cannot be scrubbed off. My brand new patio is now ruined! I would be extremely cautious of using this product!

This was straightforward to apply and worked well on stubborn rust staining. The instructions are clear, and you don’t need a large amount for a small affected area. A very useful product to have available for difficult outdoor stains.

We had a rust stain left by a rusting metal plant pot on our Indian stone patio. I wasn’t sure what to do about it, but after some research I found this product. It’s very easy to use and removed the stain completely. Amazing product and well worth the money. My patio now looks as good as new. You only need to use a very small amount, so the small bottle is more than adequate. It works very quickly and you can actually see it working as it turns purple! I used the lid to pour some of the liquid into first as it was easier to control how much I wanted to apply and to be more exact in the placement. Maybe a very small spray bottle would be a good idea.