DomestosOriginal Thick Bleach disinfectant that eliminates 99.99% of bacteria and viruses* unstoppable strength 750 ml

After years of trying various household cleaners, Domestos Original Thick Bleach continues to prove itself as one of the most reliable, no-nonsense disinfectants on the UK market. With a potent formula, impressive versatility, and a long-standing reputation for dependability, it does more than just freshen toilets—it’s a serious cleaning agent that’s remained a staple in my home for over a decade.Domestos performs exactly how a bleach should. It’s thick, clings well to vertical surfaces like toilet bowls and tiled walls, and gives the user enough visual reassurance that the area is being treated. Compared to thinner, more watery bleach products such as supermarket own-brand alternatives (e.g. Tesco or ASDA Value bleach), Domestos maintains contact with the surface longer, which makes it more effective in breaking down grime, mould, and bacteria. It isn’t flashy or perfumed—it’s practical and potent.One of its standout strengths is disinfection. On bathroom surfaces, from sinks and toilet rims to shower grouting, it removes stains and kills bacteria with ease. In comparison to products like Harpic White & Shine or Astonish Toilet Bleach, Domestos doesn’t foam up or add unnecessary gimmicks. It focuses on what matters: eradicating pathogens and cutting through biofilm. The claim of eliminating 99.99% of bacteria and viruses isn’t just marketing speak—it’s demonstrated through real use. For instance, I’ve used it post-illness to sanitise high-contact surfaces, and it’s consistently eliminated smells and left a reassuringly clean finish.When diluted, it works well for floor mopping in kitchens and entryways, where muddy boots or cooking splashes leave lingering residue. While not scented like some Dettol solutions or Fabulosa’s perfumed disinfectants, its natural sterile scent is, in my experience, more confidence-inspiring than fragrances trying to mask bacteria rather than remove them. It doesn’t leave sticky residues either, unlike some “multi-surface” disinfectants that leave floors slick or artificially glossy.Domestos also excels in outdoor cleaning tasks. I’ve used it successfully on patios where moss or algae grow in shaded corners. Mixed and poured into the gaps, it bleaches out the green without needing constant scrubbing. Unlike Cillit Bang’s patio-specific sprays, which tend to foam up and require heavy rinsing, Domestos rinses clean and doesn’t leave residue that might affect pets or attract insects.However, with power comes responsibility. Domestos is hazardous, and it’s not something to use casually or without attention. It causes severe burns if handled improperly, and must be kept away from metal fixtures and other chemicals like acids or ammonia-containing products. Mixing it unknowingly with limescale removers or acidic sprays (such as Viakal or Cif) can release dangerous fumes. In terms of safety, bleach always demands caution—and Domestos, being one of the most concentrated, is no exception. Gloves and ventilation aren’t optional; they’re required.Environmental concerns are a fair criticism. Domestos contains ingredients toxic to aquatic life, and its long-lasting chemical activity means it shouldn't be rinsed directly into storm drains or used excessively on permeable outdoor surfaces. Compared to eco-friendly alternatives like Ecover or Method, Domestos is heavier on the environment—but also significantly more powerful. For some situations, nothing else quite compares, especially in disinfection after illness, waste cleaning, or household mould control.While Domestos is marketed mainly for toilet use, I’ve applied it in around twenty different situations—many of them outside its usual scope. I’ve used it to clean out rubbish bins that had built-up sludge and maggots, disinfect pet accident zones (after thoroughly rinsing), clear minor drain clogs when poured and left overnight, remove tea stains from ceramic mugs with dilution, and to clean grout brushes, cloths, and even toothbrush holders that collect black mildew. I’ve poured it into the washing machine drawer once monthly to prevent black mould buildup, used it to brighten up a dingy shower curtain liner, and even applied it carefully on white trainers to remove grass stains. In all cases, careful dilution and rinsing are key—but the results were far better than any surface cleaner or generic bleach ever gave.Comparing it to competitors, Domestos’s main strength lies in its formula thickness and longevity on surfaces. Harpic has more targeted gels, but they tend to run off too quickly. Tesco and Morrisons’ own brands are cheaper, but thinner and less effective on vertical surfaces. Astonish is affordable and vegan-certified, but far weaker in terms of active cleaning and often requires scrubbing to match Domestos’s results. Ecover is gentle and earth-conscious, but doesn’t offer the same heavy-duty effect for deeply ingrained bacteria or odours. Method and Fabulosa are strong on scent, weak on kill rate. Dettol bleach alternatives are good for skin-friendly disinfecting, but their thinner consistency makes them less effective on stubborn grime.Domestos’s edge isn’t in pleasantness—it’s in power, performance, and consistency. It’s not a product you use lightly, but one you keep under the sink for the jobs where other cleaners fall short. It has a distinct chemical sharpness and uncompromising identity, which has kept it in homes, hospitals, and institutions for decades. The thick formulation, minimal fragrance, and maximum potency make it one of the few cleaners that, when you use it, you know it’s working.In a world full of surface sprays and scented “sanitisers”, Domestos remains one of the few that lives up to the old-school standard of truly clean. Yes, it demands respect and responsible handling. Yes, it has a harsher environmental profile. But in exchange, it gives you unparalleled performance in the moments when cleanliness isn’t optional, and when you need to know—with certainty—that the surface you’ve treated is no longer a hazard. It’s for that reliability that I keep buying, keep using, and keep trusting it.

Delivered to door ,good price, saves me carrying and possibly spilling in packed shopping bag. It works .

Value for the money and the quality is excellent for cleaning power and it's thick and clings to the toilet for a good soak and there's no leakage from the bottle and the smell is not bad and you know it's clean when you smell the clean fresh smell thank you very much 🙂

What I really like about this bleach is how thick it is. It clings to surfaces really well, especially in places like the toilet bowl or kitchen sink. This makes it more effective at removing stains and killing germs because it doesn’t just run off immediately. I’ve noticed a big difference in how clean my bathroom looks after using it, and it also leaves a fresh smell that lasts for hours.It gives me peace of mind knowing my home is thoroughly disinfected. I use it not only in the toilet but also for cleaning tiles, sinks, and even floors when diluted. It’s versatile and works well for all these tasks.The bottle design is good, with a nozzle that makes it easy to apply the bleach exactly where it’s needed. I don’t have to worry about wasting product or making a mess. The instructions on the bottle are clear, which is helpful when diluting it for different uses.However, the reason I’ve given it 4 stars instead of 5 is that the smell can be a bit strong sometimes.

Domestos Original Thick Bleach is a powerful and reliable cleaning solution designed to tackle tough stains and germs effectively. With a 750ml bottle, this bleach provides ample cleaning power for various surfaces and areas around your home.One of the standout features of Domestos Original Thick Bleach is its thick and concentrated formula. The thick consistency allows the bleach to cling to surfaces, ensuring maximum contact time to effectively kill germs and remove stubborn stains.The bleach is known for its strong disinfecting properties, making it a trusted choice for keeping your home hygienic and germ-free.With its 750ml volume, the bottle offers enough product for multiple cleaning tasks, providing excellent value for money.Domestos is a well-established brand known for its effective cleaning products, and their Original Thick Bleach reflects their commitment to quality and reliability.The "Packaging May Vary" note ensures that you may receive the product in different packaging, but the powerful cleaning capabilities remain consistent.In summary, Domestos Original Thick Bleach is a powerful and reliable cleaning solution for your home. With its thick and concentrated formula, strong disinfecting properties, and ample 750ml volume, this bleach offers effective cleaning power for various surfaces and areas. Keep your home clean and germ-free with Domestos Original Thick Bleach and experience its reliable cleaning capabilities.

Thick strong bleach and good value on Amazon. Quality bleach.

Not much to say, did the job in hand, it’s the standard thick bleach you would expect from the brand.

Best bleach.