Oust Powerful All Purpose Descaler, New Formula, Limescale Remover – Ideal for Kettles, Coffee Machines, Irons and Shower Heads, 3 Sachets

I bought the Oust Powerful All Purpose Descaler from Amazon to clean my kettle, and it worked brilliantly!The instructions say to boil water, let it cool for 10 minutes, then add the sachet. I tried that method first, but it didn’t clean the kettle well. The second time, I added the sachet immediately after boiling the water, and it worked like magic — the fizzing was instant, and the limescale just disappeared! My kettle looked shiny and new.If it’s not fully clean after the first try, you can reheat the solution and leave it for another 5–10 minutes — that really helped remove any remaining scale.Another thing I appreciated is that it doesn’t leave any funny taste or smell. The instructions say to pour the solution away, rinse with cold water, then boil clean water once, but I boiled clean water twice just to be on the safe side — and the taste was perfectly normal afterward.I’ve only used this descaler for my kettle, but for that purpose, I highly recommend it. It’s powerful, easy to use, and great value for money!

Oust (liquid).........the best I've ever bought. Half fill your kettle, boil then pour in one of the three sachets (slowly), it froths up, then leave for half an hour (smell is very feint). Rinse thoroughly. Extremely effective, looks so clean. 6 boxes with 3 sachets in each, well worth the inexpensive price. Thankyou seller. 1 day delivery with Prime. Recommended.

First I want to say that this product works fine but there’s been a lot of hassle using it for me due to poor instructions & an outdated video here on Amazon.The video I’ve briefly mentioned here on Amazon showing you how to use the product well one the product is a powder which I was expecting, either that or a tablet, anyway it’s a liquid in the sachets so that was not as instructed/advertised. So I used the product exactly as instructed expecting the product to froth up like it does in the video & absolutely nothing happened, so I waited a little longer & I added a second sachet to kind of get the chemical reaction that’s very clear to see in the video & still nothing so I jumped ahead in the instructions on the sachets packaging (which also mention froth) & started to re-boil the kettle & that was when the product started to work & fizz up so I turned the kettle off expecting it to froth up but no after the boiling base plate of the kettle was not heating up the fizzing reaction (like bubble in a pop bottle) of the product stoped & there was no froth at all! So I’m partially boiling the kettle to get some kind of reaction & it wouldn’t have been so bad as the kettle didn’t have much limescale in it at all, so I emptied it & washed it out & then the pressure of the tap surprisingly cleared up the vast majority of the inner base of the kettle which I weren’t expecting as it hadn’t frothed up like in the video or as stated on the product’s packaging at all, what was left was just two piece about the size of & looking like in shape of two tadpoles & a small broken thin streak so I put the third & final sachet from a box in after a boil & I did the same only partially re-boiling once for the fizz reaction & I just left it then for about 30 minutes & when I returned & looked into the kettle it was brilliantly silver in colour so a good soak with the product works wonders too, so I’ve learnt for future use to:Is to add a sachet of this product some 8 - 10 mins after boiling the kettle as directed & that’s boiling a kettle that’s just off being half filled with water for one sachet & if the sachet doesn’t appear to be working I’ll know it is doing something I can just trust it now yet I’ll also most certainly give the kettle a boil & turn it off just short of a full boil to get the product visibly working & I may repeat this depending on the amount of scale I’m trying to lift if it’s a little I’ll pour away after leaving it to work for some 20 - 30 minutes & then I’ll clean with the fastest running tap now if there’s a little limescale left I’ll repeat the above & if that is not needed I’ll boil a full kettle of water alone then I’ll pour that out & I’ll thoroughly wash out the kettle before next use.The product does work but the instructions & the usage video are outdated for what you get plus I’ve got a wonderfully clean like new inner kettle base yet I haven’t had any froth whatsoever, not white froth nor dirty white froth, again no froth at all but again a thoroughly clean limescale free kettle.

Easy. Quick. Reliable. Versatile. Safe.

Always use this product for descaling my kettle. Need to descale regularly! Always does the job well! Great value for money!

Good product and does the job well - would recommend

It does the work they intended very easily

Works great