---
product_id: 471751144
title: "Bloo 3in1 in-Cistern Toilet Blocks Original 50g Limescale Remover Cistern, Cleaning, Foaming Action and Fresheners"
brand: "bloo"
price: "$11.22"
currency: USD
in_stock: true
reviews_count: 11
category: "Bloo"
url: https://www.desertcart.us/products/471751144-bloo-3in1-in-cistern-toilet-blocks-original-50g-limescale-remover
store_origin: US
region: United States of America
---

# Powerful foaming blue water action Up to 800 flushes per block Limescale prevention & removal Bloo 3in1 in-Cistern Toilet Blocks Original 50g Limescale Remover Cistern, Cleaning, Foaming Action and Fresheners

**Brand:** bloo
**Price:** $11.22
**Availability:** ✅ In Stock

## Summary

> 🚽 Elevate your flush game — clean, fresh, and blue, every time!

## Quick Answers

- **What is this?** Bloo 3in1 in-Cistern Toilet Blocks Original 50g Limescale Remover Cistern, Cleaning, Foaming Action and Fresheners by bloo
- **How much does it cost?** $11.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/471751144-bloo-3in1-in-cistern-toilet-blocks-original-50g-limescale-remover)

## Best For

- bloo enthusiasts

## Why This Product

- Trusted bloo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by thousands:** With a 4.5-star rating from over 760 reviews, Bloo is the go-to choice for millennial managers who demand efficiency and reliability in home care.
- • **Long-lasting freshness:** Each Bloo block delivers up to 800 flushes of hygienic cleaning and fresh blue water, keeping your bathroom effortlessly fresh for a full month.
- • **Vibrant blue water tech:** Transforms your toilet water into a visually satisfying blue hue with every flush, signaling active cleaning and freshness.
- • **Advanced limescale defense:** Specially formulated to prevent and dissolve stubborn limescale buildup, restoring flush power and maintaining a sparkling toilet bowl.
- • **Effortless maintenance upgrade:** Foaming action cleans from cistern to bowl, reducing the need for harsh scrubbing and daily upkeep—perfect for busy professionals.

## Overview

Bloo 3in1 in-Cistern Toilet Blocks combine powerful foaming action, limescale prevention, and fresh blue water technology to deliver up to 800 flushes of hygienic cleanliness. Designed for long-lasting performance, these 50g blocks clean from the cistern to the bowl, reduce limescale buildup, and keep your toilet smelling fresh with minimal effort. Ideal for busy professionals seeking an effective, low-maintenance bathroom upgrade.

## Description

Product Description Description- A hygienically clean and fresh toilet from the cistern out with every flush! Make your loo the best seat in the house with a long-lasting Bloo toilet block that you can rely on. Bloo in cistern block gets your toilet shining again with cleaning and foaming action, giving you a hygienically clean and fresh toilet from cistern to toilet rim to bowl, with every flush! Bring colour to your bathroom and turn your toilet water blue with Bloo blue water technology that actively cleans between flushes! With a concentrated cleaning action designed to prevent limescale, this toilet unblocker range cleans from the cistern to bowl every time you flush for a long lasting, hygenic clean. . How to use: . There is no need to remove the pleated wrapper as this will dissolve in the water. . 1. Open your cistern and drop the block, with the film on, into the cistern by the water float. . 2. Allow 10 minutes for the block to settle before flushing. . 3. Replace with a new block when the colour starts to fade. . 4. Each block can last up to 400 flushes. . Product details: . - Toilet cleaner In cistern block . - Foams and cleans with every flush . - Prevents limescale, toilet descaler . - Toilet Tablets turns toilet water blue . - Each toilet block lasts up to 400 flushes . - Pair with Bloo toilet cleaner products range for full hygienically cleaning effect Ingredients 15-30 % Anionic Surfactants, 5-15 % Non-Ionic Surfactants, Further ingredients: Perfumes (Hexyl Cinnamal, Eugenol, Alpha-isomethyl Ionone, Coumarin, Citronellol)

Review: Worked a treat, even on my limescale! - I live on a chalk hill. It's an aquifer and my tap water comes from the deep reservoir within it - which is why my tap water always comes out chalk white! I have to run it for some time for it to become clear. It deposits lots of limescale into everything that needs a water supply, including my toilet and cistern. Nothing has worked well enough to remove much of the limescale that's built up in my cistern and toilet bowl too (to a lesser degree), despite many products and much scrubbing. The flush has even become less powerful over time, from the limescale I can't reach! I bought these Bloo cubes on a whim, purely because I'd not tried this particular Bloo product yet. I'm constantly searching for anything to do the job better. These turn the water blue and smell nice. It's a clean smell and not overpowering when the loo is flushed either. It's just enough for the bathroom to smell nice. I suppose it could smell stronger but it's not the smell I'm interested in, as long as it's not a choker. Less than 24 hours after popping one in the cistern I noticed the limescale was reduced and within 1 week the flush was more powerful! I couldn't believe it. One cube lasted us 5 weeks in total and during week 4 the flush was really good, flushing almost as well as it used to! The toilet bowl is definitely not coated in as much limescale either, it's more shiny and definitely smoother. It also helps keep the toilet clean after use, meaning now it just needs a quick clean daily and a weekly scrub. As the only cleaner in my household this is definitely a good thing! As you can likely tell, I'm very pleased with this product and I hope it works as well for other people. I had a lot of scale to remove compared to a lot of other toilets I've seen or cleaned, but I assume it'll work well in a situation with less scale, although perhaps it might not be as noticeable as the changes I've seen. There's a green Bloo cube that keeps away limescale. I've not tried that yet as I'm still on my 2nd blue cube (not as much of an improvement to report as the first cube used), but I'll certainly consider it after this cube has finished. I'm hoping it'll maintain this this reduced level of limescale. If not, I'm back to these blue Bloo cubes... until I find a better product!
Review: Does with it says on the tin..good value - Its does wot it says on the box..Lasts 1 month..so a pk of 2 will last 2 monthes..its nice blue water smells ok,I buy 1 every 8 week

## Features

- Causes serious eye damage.
- Causes skin irritation.
- Harmful to aquatic life with long lasting effects.
- New: New Bloo toilet cistern blocks for stronger and longer lasting results to keep your loo fresh and clean. With additional limescale prevention action.
- Fresh and clean: Bloo toilet blocks give you a hygienically toilet cleaning foam from the cistern as well as foaming action and blue water with every flush.
- Toilet limescale remover: Bloo toilet cistern blocks create a strong foaming action to prevent limescale, keeping the loo hygienically clean in between deep cleans.
- Clean colour: Bring colour to your bathroom and turn your toilet water blue with the blue toilet blocks which freshen and target limescale between flushes.
- Long Lasting: The blue toilet stain remover block lasts for multiple flushes, up to 800 flushes (4 weeks per block) of cleaning and foaming blue water action.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B9C5BXVL |
| ASIN  | B0B9C5BXVL |
| Best Sellers Rank | 635 in Grocery ( See Top 100 in Grocery ) 12 in Toilet Cleaners |
| Brand | Bloo |
| Customer Reviews | 4.5 4.5 out of 5 stars (764) |
| Customer reviews | 4.5 4.5 out of 5 stars (764) |
| Date First Available | 10 Aug. 2022 |
| Format | Tablet |
| Item model number  | 2856300 |
| Manufacturer  | Henkel |
| Package Dimensions  | 16.8 x 12.6 x 3.2 cm; 50 g |
| Units | 2 Count |

## Product Details

- **Brand:** Bloo
- **Item form:** Tablet
- **Item weight:** 50 Grams
- **Material feature:** Long lasting, Scented
- **Number of items:** 1
- **Scent:** Original Blue
- **Special feature:** Concentrated, Descaler, Prevents Limescale, Removes limescale
- **Specific uses for product:** Toilet
- **Surface recommendation:** Toilet
- **Unit count:** 2 Count

## Images

![Bloo 3in1 in-Cistern Toilet Blocks Original 50g Limescale Remover Cistern, Cleaning, Foaming Action and Fresheners - Image 1](https://m.media-amazon.com/images/I/818gb8VYpTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked a treat, even on my limescale!
*by A***D on 10 March 2024*

I live on a chalk hill. It's an aquifer and my tap water comes from the deep reservoir within it - which is why my tap water always comes out chalk white! I have to run it for some time for it to become clear. It deposits lots of limescale into everything that needs a water supply, including my toilet and cistern. Nothing has worked well enough to remove much of the limescale that's built up in my cistern and toilet bowl too (to a lesser degree), despite many products and much scrubbing. The flush has even become less powerful over time, from the limescale I can't reach! I bought these Bloo cubes on a whim, purely because I'd not tried this particular Bloo product yet. I'm constantly searching for anything to do the job better. These turn the water blue and smell nice. It's a clean smell and not overpowering when the loo is flushed either. It's just enough for the bathroom to smell nice. I suppose it could smell stronger but it's not the smell I'm interested in, as long as it's not a choker. Less than 24 hours after popping one in the cistern I noticed the limescale was reduced and within 1 week the flush was more powerful! I couldn't believe it. One cube lasted us 5 weeks in total and during week 4 the flush was really good, flushing almost as well as it used to! The toilet bowl is definitely not coated in as much limescale either, it's more shiny and definitely smoother. It also helps keep the toilet clean after use, meaning now it just needs a quick clean daily and a weekly scrub. As the only cleaner in my household this is definitely a good thing! As you can likely tell, I'm very pleased with this product and I hope it works as well for other people. I had a lot of scale to remove compared to a lot of other toilets I've seen or cleaned, but I assume it'll work well in a situation with less scale, although perhaps it might not be as noticeable as the changes I've seen. There's a green Bloo cube that keeps away limescale. I've not tried that yet as I'm still on my 2nd blue cube (not as much of an improvement to report as the first cube used), but I'll certainly consider it after this cube has finished. I'm hoping it'll maintain this this reduced level of limescale. If not, I'm back to these blue Bloo cubes... until I find a better product!

### ⭐⭐⭐⭐⭐ Does with it says on the tin..good value
*by D***B on 11 February 2026*

Its does wot it says on the box..Lasts 1 month..so a pk of 2 will last 2 monthes..its nice blue water smells ok,I buy 1 every 8 week

### ⭐⭐⭐⭐ owerful but Potentially Problematic
*by J***H on 4 April 2025*

Having used a wide array of toilet maintenance products over the years—from gels and discs to fizz tabs and bleach solutions—Bloo’s Original Blue In-Cistern Blocks immediately stood out for their sheer convenience and visual satisfaction. Drop it in and forget about it for several weeks? Easy. But as someone who maintains properties professionally and pays close attention to what happens beneath the surface, this little blue powerhouse isn’t without its warnings. First off, yes—it works impressively well on the surface. Each flush releases a rich blue swirl that’s both satisfying and clearly doing something. You notice less limescale build-up in the bowl, odours are kept in check even in high-use households, and there’s a clear foaming action that suggests it's actively cleaning. Over the course of four weeks, one block handled hard water scale, toilet rim residues, and that unspoken bathroom film with noticeable efficiency. However, the hidden trade-off? The inner cistern. After two months of back-to-back use, I noticed something odd in one client’s WC. The toilet began leaking from the base, and upon inspection, the flush seal (a rubber component that forms part of the siphon or flush valve) had deteriorated badly. It was softening, cracking at the edges, and had absorbed an unusual blue tint. The water left in the cistern had taken on a slick feel—almost slippery like a light detergent solution. Testing confirmed what I suspected: the active components, particularly the colourant and limescale agents in Bloo’s formulation, had gradually compromised the rubber seal integrity. The replacement cost wasn’t high, but for those with older cistern parts or non-standard fittings, it’s something to be aware of. Professionally, I now only recommend Bloo blocks in toilets where the cistern has synthetic seals (silicone or PTFE based) or where routine maintenance includes seal inspection every 6–12 months. For more delicate or rarely inspected cisterns—especially those using rubber-based drop valves or older flappers—these blocks can gradually degrade key internal parts. It’s not immediate, and many users might never notice, but it’s a hidden risk if left unchecked. On the plus side, the formulation is potent. It truly does reduce limescale over time, particularly if you're in a hard water area. The scent is crisp, not overly chemical, and the deep blue dye gives visual reassurance that the product is still working. It’s incredibly easy to install—no unwrapping, no fuss, just drop it near the float and you’re done. Each block lasted about 3–4 weeks in standard flush use and up to 5 weeks in a downstairs cloakroom with lower footfall. In terms of presentation and user-friendliness, it’s a winner. Pros: – Powerful limescale prevention and surface cleaning – Long-lasting (800 flushes per block is realistic) – Excellent value, especially in multipacks – Colour-changing indicator lets you know when it’s time to replace – Easy installation with no unwrapping required – Keeps the bowl fresh and blue between cleans Cons: – Can degrade rubber flush seals and gaskets over time – May cause unexpected leaks in older or sensitive cistern systems – Slightly greasy chemical feel to the water in the tank – No protective casing or child-safe packaging – Not suitable for macerators or wall-hung units without regular maintenance access Final thoughts: If you’re the type who wants a hands-off toilet cleaner that works visibly and doesn’t smell like hospital bleach, Bloo Original Blue is excellent—as long as you’re aware of the caveats. I’d advise using it with caution in high-end toilets or those with older plumbing. And if you're in a rental or managing multiple properties, periodic checks on seals and internal cistern fittings are a must. It’s a five-star performer when judged solely on cleaning power and convenience, but loses a star in my book due to the potential for long-term damage. A great product, but with a reminder: what it cleans in your bowl may wear away what’s behind the scenes. Use smartly.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-19*