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Bloo Toilet Blocks Limescale Prevention, Pack of 2

4.4 out of 5 stars 1,316 ratings

£1.75 with 16 percent savings £0.88 per count
RRP: £2.08
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Size Name: 2 count (Pack of 1)
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Purchase options and add-ons

Brand Bloo
Item form Tablet
Scent Unscented
Specific uses for product Toilet
Material feature Scented, Long lasting
Item volume 80 Millilitres
Unit count 2 count
Surface recommendation Toilet
Special feature Prevents Limescale, Descaler, Removes limescale, Concentrated
Number of items 1

About this item

  • New Bloo toilet cistern blocks for stronger and longer lasting results to keep your loo 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
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Ingredients:

Bloo Toilet Blocks Limescale Prevention, Pack of 2

Product description

Product Description

Bloo Toilet Blocks Limescale Prevention, Pack of 2

Ingredients

Bloo Toilet Blocks Limescale Prevention, Pack of 2


From the manufacturer

duo cubes
benefits
recycle
easy to use
Bloo Toilet Blocks
Bloo Colour Active Rimblock
Bloo Power Active Rimblock
Bloo Liquid Toilet Cleaner
Bloo Toilet Fizz Tabs
Customer Reviews
4.4 out of 5 stars 1,316
4.5 out of 5 stars 3,552
4.5 out of 5 stars 16,557
4.6 out of 5 stars 423
Price £1.75 £1.65 £2.84 no data no data
Type Toilet Cistern Block Rim Block Rim Block Liquid Toilet Cleaner Fizz Tab
Benefit Protect Freshen Freshen Shine Deep Clean
Where to use Tank Bowl Bowl Bowl Bowl
Removes Limescale
Fragrance variations available (sold separately) Limescale Prevention, Original Blue Bleach, Flowers, Lavender Flowers, Lemon Flowers, Lemon, Ocean Lemon

Product information

Technical Details

General Information
Volume ‎5 Cubic Inches
Units ‎2 count
Brand ‎Bloo
Format ‎Tablet

Additional Information

ASIN B0B9C6PV82
Customer Reviews
4.4 out of 5 stars 1,316 ratings

4.4 out of 5 stars
Best Sellers Rank
Date First Available 10 Aug. 2022

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Bloo Toilet Blocks Limescale Prevention, Pack of 2


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Product details

  • Package Dimensions ‏ : ‎ 16.8 x 12.6 x 3.2 cm; 100 g
  • Manufacturer ‏ : ‎ Henkel
  • ASIN ‏ : ‎ B0B9C6PV82
  • Item model number ‏ : ‎ 2856304
  • Customer reviews:
    4.4 out of 5 stars 1,316 ratings

Customer reviews

4.4 out of 5 stars
1,316 global ratings

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Customers say

Customers find the toilet blocks effective and long-lasting, appreciating their lovely scent and how they keep toilets clean and fresh for up to several weeks. The blocks are easy to use, requiring no complicated installations or messy applications, and customers like that they turn the water a nice blue color. They consider the product excellent value for money.

60 customers mention ‘Longevity’46 positive14 negative

Customers find that the toilet blocks last long and are very strong at first, with one customer noting they are easier to maintain over time.

"...Long-Lasting: The Bloo Toilet Blocks are designed to last for an extended period, so you won’t need to replace them frequently...." Read more

"...not only keeps the toilet looking cleaner but also makes it easier to maintain over time...." Read more

"...Long-Lasting: The Bloo Toilet Blocks are designed to last for an extended period, so you won’t need to replace them frequently...." Read more

"I love these but they just don't seem to last. I purchased a pack of 14 203 days ago...." Read more

46 customers mention ‘Scent’37 positive9 negative

Customers like the pleasant scent of the toilet blocks.

"...The fragrance released is pleasantly refreshing, and it effectively combats odors, leaving the bathroom smelling great all day long...." Read more

"...The scent is clean and subtle, not overpowering, making it ideal for people who want a fresh-smelling toilet without a strong chemical or artificial..." Read more

"Lasts longer than other brands, smells fresh and not of chlorine good value" Read more

"...water a nice blue colour which is very strong at first, and the scent is fresh up and till the last flush...." Read more

40 customers mention ‘Works well’33 positive7 negative

Customers find that the toilet blocks work well and are better than alternatives, with one customer noting they remove limescale effectively.

"...However, the convenience and effectiveness of the product may outweigh this consideration for many. Verdict:..." Read more

"...easy to use; just drop one in the cistern and it works its magic with every flush...." Read more

"Good product, however, I doubt they would last as long as you hope they would...." Read more

"Did a good enough job, but I don't think they lasted as long as the other bloo products I have used before." Read more

37 customers mention ‘Cleanliness’28 positive9 negative

Customers find the toilet blocks effective at maintaining cleanliness, keeping both the bowl and cistern fresh and hygienic, with one customer noting it's a worthwhile addition to their cleaning routine.

"...The simplicity of the product makes it a hassle-free addition to your toilet cleaning routine, perfect for those who want an easy and effective way..." Read more

"...What’s more, the anti-limescale formula helps keep the toilet bowl sparkling clean and stain-free...." Read more

"...The simplicity of the product makes it a hassle-free addition to your toilet cleaning routine, perfect for those who want an easy and effective way..." Read more

"...and if you continue to use these like I do on repeat basis, plastic waste builds up in the bottom of the cistern, which in turns, then gets caught..." Read more

35 customers mention ‘Value for money’32 positive3 negative

Customers find the toilet blocks to be excellent value for money, describing them as super cheap.

"...This makes them an affordable option for anyone looking to maintain a fresh-smelling, limescale-free toilet without spending too much on expensive..." Read more

"...This makes them an affordable option for anyone looking to maintain a fresh-smelling, limescale-free toilet without spending too much on expensive..." Read more

"Fresh cistern and toilet. Excellent value for money. These are easy to use and leave your loo clean and Fresh...." Read more

"Lasts longer than other brands, smells fresh and not of chlorine good value" Read more

29 customers mention ‘Water colour’25 positive4 negative

Customers like how the cleaning agent turns the water a nice blue color.

"...The scent is clean and subtle, not overpowering, making it ideal for people who want a fresh-smelling toilet without a strong chemical or artificial..." Read more

"...They leave the water in the bowl a lovely deep blue colour which looks good. These don't foam but they aren't meant to but they do last for weeks." Read more

"...It does foam but not to much. The quality is good the water is still blue. Let’s see its cleaning ability." Read more

"...of these but these are definitely my favourite easy to use not murkyness like you get with some others they are my go to block" Read more

15 customers mention ‘Ease of use’15 positive0 negative

Customers find the toilet block easy to use, with one customer noting it requires no complicated installations or messy applications.

"...Verdict: The Bloo Toilet Blocks Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale..." Read more

"...The blocks are incredibly easy to use; just drop one in the cistern and it works its magic with every flush...." Read more

"...Verdict: The Bloo Toilet Blocks Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale..." Read more

"Fresh cistern and toilet. Excellent value for money. These are easy to use and leave your loo clean and Fresh...." Read more

15 customers mention ‘Freshness’15 positive0 negative

Customers appreciate that the toilet block keeps their bathroom fresh for up to several weeks.

"...Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale build-up, especially in areas with..." Read more

"...The result is a consistently fresh and hygienically clean toilet without any extra effort...." Read more

"...Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale build-up, especially in areas with..." Read more

"Fresh cistern and toilet. Excellent value for money. These are easy to use and leave your loo clean and Fresh...." Read more

Fresh fragrance and strong cleaning foam!
5 out of 5 stars
Fresh fragrance and strong cleaning foam!
Really nice fresh fragrance and can notice my toilet it a lot cleaner! Also love the vibrant blue colour in the toilet, will be purchasing again :)
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Top reviews from United Kingdom

  • Reviewed in the United Kingdom on 26 January 2025
    Size Name: 2 count (Pack of 1)Verified Purchase
    The Bloo Toilet Blocks Limescale Prevention offer an easy and effective solution to keeping your toilet fresh and free from limescale build-up. These toilet blocks are designed to be dropped into the toilet cistern, where they work to help prevent limescale and grime while providing a fresh, clean fragrance with every flush. Here’s an honest review of its features, pros, and cons:

    What’s Great:
    Effective Limescale Prevention:
    One of the key benefits of these toilet blocks is their ability to prevent limescale build-up in the toilet bowl. In areas with hard water, limescale can accumulate quickly, making the toilet look unsightly and difficult to clean. Bloo Toilet Blocks help to reduce this build-up, keeping your toilet cleaner for longer and making it easier to maintain.

    Fresh Fragrance with Every Flush:
    The Bloo Toilet Blocks come with a fresh, pleasant fragrance that’s released with every flush. The scent is clean and subtle, not overpowering, making it ideal for people who want a fresh-smelling toilet without a strong chemical or artificial odour. It helps to maintain a hygienic atmosphere in the bathroom, ensuring a refreshing experience each time you use the toilet.

    Convenient and Easy to Use:
    These toilet blocks are very easy to use – simply drop one into your toilet cistern and let it dissolve over time with each flush. There’s no need for complicated installations or messy applications. The simplicity of the product makes it a hassle-free addition to your toilet cleaning routine, perfect for those who want an easy and effective way to keep their toilet in good condition.

    Long-Lasting:
    The Bloo Toilet Blocks are designed to last for an extended period, so you won’t need to replace them frequently. Each block provides continuous cleaning and freshening for up to several weeks, making them a cost-effective option for long-term use. This means you get reliable, ongoing protection against limescale without needing constant replacement.

    Helps Maintain Toilet Hygiene:
    By preventing limescale and providing a fresh scent, Bloo Toilet Blocks also help to maintain overall toilet hygiene. They provide a bit of extra cleaning power between deep cleans, helping to keep your toilet looking and smelling fresh for longer periods.

    What Could Be Improved:
    Limited Limescale Removal Power:
    While the toilet blocks are great at preventing new limescale build-up, they may not be as effective at removing existing limescale deposits that have already formed in the toilet. If your toilet has significant limescale stains, you might need a more powerful cleaner in addition to the toilet blocks for a deeper clean.

    Fragrance May Not Last Long Enough for Some Users:
    Some customers have noted that the fragrance provided by the toilet blocks doesn’t last as long as they would like. While the scent is pleasant initially, it may fade more quickly than expected, especially with frequent flushing. This may require replacing the block sooner than anticipated for those who want a consistently fresh scent in their toilet.

    Effectiveness May Vary by Water Hardness:
    The effectiveness of Bloo Toilet Blocks can vary depending on the hardness of the water in your area. In places with very hard water, the blocks may not prevent limescale as effectively as in areas with softer water. If you live in an area with extremely hard water, you might need a more specialised solution for tackling limescale build-up.

    Noteworthy Observations:
    Affordable and Accessible:
    The Bloo Toilet Blocks are relatively inexpensive and can be found easily in most supermarkets and online stores. This makes them an affordable option for anyone looking to maintain a fresh-smelling, limescale-free toilet without spending too much on expensive cleaning products.

    Environmentally Friendly Option:
    While the product provides effective cleaning and fragrance, it’s worth noting that the packaging is plastic-based, and users concerned about environmental impact may want to look for alternative products with eco-friendly packaging or biodegradable options. However, the convenience and effectiveness of the product may outweigh this consideration for many.

    Verdict:
    The Bloo Toilet Blocks Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale build-up, especially in areas with hard water. Their ability to provide a clean fragrance with every flush and prevent new limescale accumulation makes them a worthwhile addition to your toilet cleaning routine. While they may not be as effective at removing existing limescale stains and the fragrance could last longer, the product delivers on its promises of convenience and ease of use. Overall, it’s a great option for those looking to maintain a clean, fresh-smelling toilet without the need for constant scrubbing.
    2 people found this helpful
    Report
  • Reviewed in the United Kingdom on 17 June 2024
    Size Name: 2 count (Pack of 1)Verified Purchase
    Bloo toilet blocks have transformed my bathroom routine into a hassle-free experience. The blocks are incredibly easy to use; just drop one in the cistern and it works its magic with every flush. The result is a consistently fresh and hygienically clean toilet without any extra effort. The fragrance released is pleasantly refreshing, and it effectively combats odors, leaving the bathroom smelling great all day long. What’s more, the anti-limescale formula helps keep the toilet bowl sparkling clean and stain-free. Bloo toilet blocks are a simple yet effective solution for maintaining a pristine and inviting bathroom. Highly recommended for those who value cleanliness and freshness.

    One of the standout features of Bloo toilet blocks is their excellent limescale prevention. Living in an area with hard water, limescale buildup has always been a concern, but since using Bloo, I’ve noticed a significant reduction in limescale deposits. The formula seems to create a protective barrier with each flush, preventing the limescale from adhering to the toilet bowl. This not only keeps the toilet looking cleaner but also makes it easier to maintain over time. It’s impressive how such a small block can make such a big difference in keeping limescale at bay.
    9 people found this helpful
    Report
  • Reviewed in the United Kingdom on 11 June 2025
    Size Name: 2 count (Pack of 1)Verified Purchase
    I’ve found they’ve lasted fairly long - about two weeks in and the block is still slowly working away. I get the bubbles after each flush but this has made no difference to the limescale in my bowl. I had to use citric acid separately to remove the bowl scale and I’ve actually noticed the limescale turning yellow from the holes under the rim since using this. So it’s a no for limescale removal and strange that it hasn’t been able to bleach that….

    The Bloo Toilet Blocks Limescale Prevention offer an easy and effective solution to keeping your toilet fresh and free from limescale build-up. These toilet blocks are designed to be dropped into the toilet cistern, where they work to help prevent limescale and grime while providing a fresh, clean fragrance with every flush. Here’s an honest review of its features, pros, and cons:

    What’s Great:
    Effective Limescale Prevention:
    One of the key benefits of these toilet blocks is their ability to prevent limescale build-up in the toilet bowl. In areas with hard water, limescale can accumulate quickly, making the toilet look unsightly and difficult to clean. Bloo Toilet Blocks help to reduce this build-up, keeping your toilet cleaner for longer and making it easier to maintain.

    Fresh Fragrance with Every Flush:
    The Bloo Toilet Blocks come with a fresh, pleasant fragrance that’s released with every flush. The scent is clean and subtle, not overpowering, making it ideal for people who want a fresh-smelling toilet without a strong chemical or artificial odour. It helps to maintain a hygienic atmosphere in the bathroom, ensuring a refreshing experience each time you use the toilet.

    Convenient and Easy to Use:
    These toilet blocks are very easy to use – simply drop one into your toilet cistern and let it dissolve over time with each flush. There’s no need for complicated installations or messy applications. The simplicity of the product makes it a hassle-free addition to your toilet cleaning routine, perfect for those who want an easy and effective way to keep their toilet in good condition.

    Long-Lasting:
    The Bloo Toilet Blocks are designed to last for an extended period, so you won’t need to replace them frequently. Each block provides continuous cleaning and freshening for up to several weeks, making them a cost-effective option for long-term use. This means you get reliable, ongoing protection against limescale without needing constant replacement.

    Helps Maintain Toilet Hygiene:
    By preventing limescale and providing a fresh scent, Bloo Toilet Blocks also help to maintain overall toilet hygiene. They provide a bit of extra cleaning power between deep cleans, helping to keep your toilet looking and smelling fresh for longer periods.

    What Could Be Improved:
    Limited Limescale Removal Power:
    While the toilet blocks are great at preventing new limescale build-up, they may not be as effective at removing existing limescale deposits that have already formed in the toilet. If your toilet has significant limescale stains, you might need a more powerful cleaner in addition to the toilet blocks for a deeper clean.

    Fragrance May Not Last Long Enough for Some Users:
    Some customers have noted that the fragrance provided by the toilet blocks doesn’t last as long as they would like. While the scent is pleasant initially, it may fade more quickly than expected, especially with frequent flushing. This may require replacing the block sooner than anticipated for those who want a consistently fresh scent in their toilet.

    Effectiveness May Vary by Water Hardness:
    The effectiveness of Bloo Toilet Blocks can vary depending on the hardness of the water in your area. In places with very hard water, the blocks may not prevent limescale as effectively as in areas with softer water. If you live in an area with extremely hard water, you might need a more specialised solution for tackling limescale build-up.

    Noteworthy Observations:
    Affordable and Accessible:
    The Bloo Toilet Blocks are relatively inexpensive and can be found easily in most supermarkets and online stores. This makes them an affordable option for anyone looking to maintain a fresh-smelling, limescale-free toilet without spending too much on expensive cleaning products.

    Environmentally Friendly Option:
    While the product provides effective cleaning and fragrance, it’s worth noting that the packaging is plastic-based, and users concerned about environmental impact may want to look for alternative products with eco-friendly packaging or biodegradable options. However, the convenience and effectiveness of the product may outweigh this consideration for many.

    Verdict:
    The Bloo Toilet Blocks Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale build-up, especially in areas with hard water. Their ability to provide a clean fragrance with every flush and prevent new limescale accumulation makes them a worthwhile addition to your toilet cleaning routine. While they may not be as effective at removing existing limescale stains and the fragrance could last longer, the product delivers on its promises of convenience and ease of use. Overall, it’s a great option for those looking to maintain a clean, fresh-smelling toilet without the need for constant scrubbing.
    Customer image
    4.0 out of 5 stars
    Lasts but doesn’t remove limescale

    Reviewed in the United Kingdom on 11 June 2025
    I’ve found they’ve lasted fairly long - about two weeks in and the block is still slowly working away. I get the bubbles after each flush but this has made no difference to the limescale in my bowl. I had to use citric acid separately to remove the bowl scale and I’ve actually noticed the limescale turning yellow from the holes under the rim since using this. So it’s a no for limescale removal and strange that it hasn’t been able to bleach that….

    The Bloo Toilet Blocks Limescale Prevention offer an easy and effective solution to keeping your toilet fresh and free from limescale build-up. These toilet blocks are designed to be dropped into the toilet cistern, where they work to help prevent limescale and grime while providing a fresh, clean fragrance with every flush. Here’s an honest review of its features, pros, and cons:

    What’s Great:
    Effective Limescale Prevention:
    One of the key benefits of these toilet blocks is their ability to prevent limescale build-up in the toilet bowl. In areas with hard water, limescale can accumulate quickly, making the toilet look unsightly and difficult to clean. Bloo Toilet Blocks help to reduce this build-up, keeping your toilet cleaner for longer and making it easier to maintain.

    Fresh Fragrance with Every Flush:
    The Bloo Toilet Blocks come with a fresh, pleasant fragrance that’s released with every flush. The scent is clean and subtle, not overpowering, making it ideal for people who want a fresh-smelling toilet without a strong chemical or artificial odour. It helps to maintain a hygienic atmosphere in the bathroom, ensuring a refreshing experience each time you use the toilet.

    Convenient and Easy to Use:
    These toilet blocks are very easy to use – simply drop one into your toilet cistern and let it dissolve over time with each flush. There’s no need for complicated installations or messy applications. The simplicity of the product makes it a hassle-free addition to your toilet cleaning routine, perfect for those who want an easy and effective way to keep their toilet in good condition.

    Long-Lasting:
    The Bloo Toilet Blocks are designed to last for an extended period, so you won’t need to replace them frequently. Each block provides continuous cleaning and freshening for up to several weeks, making them a cost-effective option for long-term use. This means you get reliable, ongoing protection against limescale without needing constant replacement.

    Helps Maintain Toilet Hygiene:
    By preventing limescale and providing a fresh scent, Bloo Toilet Blocks also help to maintain overall toilet hygiene. They provide a bit of extra cleaning power between deep cleans, helping to keep your toilet looking and smelling fresh for longer periods.

    What Could Be Improved:
    Limited Limescale Removal Power:
    While the toilet blocks are great at preventing new limescale build-up, they may not be as effective at removing existing limescale deposits that have already formed in the toilet. If your toilet has significant limescale stains, you might need a more powerful cleaner in addition to the toilet blocks for a deeper clean.

    Fragrance May Not Last Long Enough for Some Users:
    Some customers have noted that the fragrance provided by the toilet blocks doesn’t last as long as they would like. While the scent is pleasant initially, it may fade more quickly than expected, especially with frequent flushing. This may require replacing the block sooner than anticipated for those who want a consistently fresh scent in their toilet.

    Effectiveness May Vary by Water Hardness:
    The effectiveness of Bloo Toilet Blocks can vary depending on the hardness of the water in your area. In places with very hard water, the blocks may not prevent limescale as effectively as in areas with softer water. If you live in an area with extremely hard water, you might need a more specialised solution for tackling limescale build-up.

    Noteworthy Observations:
    Affordable and Accessible:
    The Bloo Toilet Blocks are relatively inexpensive and can be found easily in most supermarkets and online stores. This makes them an affordable option for anyone looking to maintain a fresh-smelling, limescale-free toilet without spending too much on expensive cleaning products.

    Environmentally Friendly Option:
    While the product provides effective cleaning and fragrance, it’s worth noting that the packaging is plastic-based, and users concerned about environmental impact may want to look for alternative products with eco-friendly packaging or biodegradable options. However, the convenience and effectiveness of the product may outweigh this consideration for many.

    Verdict:
    The Bloo Toilet Blocks Limescale Prevention are a simple, affordable, and effective way to keep your toilet fresh and reduce limescale build-up, especially in areas with hard water. Their ability to provide a clean fragrance with every flush and prevent new limescale accumulation makes them a worthwhile addition to your toilet cleaning routine. While they may not be as effective at removing existing limescale stains and the fragrance could last longer, the product delivers on its promises of convenience and ease of use. Overall, it’s a great option for those looking to maintain a clean, fresh-smelling toilet without the need for constant scrubbing.
    Images in this review
    Customer image
  • Reviewed in the United Kingdom on 3 August 2024
    Size Name: 2 count (Pack of 1)Verified Purchase
    Fresh cistern and toilet. Excellent value for money. These are easy to use and leave your loo clean and Fresh. They leave the water in the bowl a lovely deep blue colour which looks good. These don't foam but they aren't meant to but they do last for weeks.
    3 people found this helpful
    Report

Top reviews from other countries

  • Priya Raju
    4.0 out of 5 stars Misleading information, but great product
    Reviewed in India on 18 June 2025
    Size Name: 1 count (Pack of 14)Verified Purchase
    The product lasted 1/10th of the number of flushes as advertised. But: it’s an excellent product. Kept the toilet clean and smelling good.
  • Rohan Kumar
    1.0 out of 5 stars Disappointed ☹️
    Reviewed in India on 13 June 2025
    Size Name: 1 count (Pack of 14)Verified Purchase
    Waste...lasted for only 4 days/cube..
  • Naushad Ahmad
    1.0 out of 5 stars Very expensive
    Reviewed in India on 1 June 2025
    Size Name: 1 count (Pack of 14)Verified Purchase
    Worthless

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Product Safety

This product is subject to specific safety warnings
  • Causes serious eye damage.

  • Causes skin irritation.

  • Harmful to aquatic life with long lasting effects.