Do Vinegar and Bicarbonate of Soda Actually Clean?

Two things sit in almost every kitchen cupboard in Berkshire, and the internet is completely certain about both of them: a bottle of white vinegar and a tub of bicarbonate of soda. Tip one into the other and a video's worth of foam climbs out of the sink. We are asked about this on jobs often enough — usually by someone who has already tried the oven version — that it is worth answering properly rather than politely. Both are genuinely useful. Each is good at one narrow, specific job. And the single most popular way of using them, which is mixing them together, is the one way that reliably wastes both.

The short answer, job by job

Almost every argument about these two products disappears once you separate the jobs. Cleaning is not one activity — dissolving a mineral deposit, breaking down fat, lifting everyday soil, scouring a surface and killing a virus are five different problems, and they need different things. Here is where each product honestly sits.

White vinegar: a dilute acid that is excellent at one thing

White vinegar is acetic acid dissolved in water, and the proportions matter more than most people expect. Dri-Pak, a long-established UK manufacturer of traditional cleaning products, is blunt about it on its own advice pages: "the largest constituent of white vinegar is water", and its extra-strength bottle "has 50% more acetic acid" than the standard one (Dri-Pak FAQs). Two bottles both labelled white vinegar are not necessarily the same product, and a cooking vinegar from the supermarket is weaker again.

What that dilute acid is genuinely good at is mineral deposit. Nathan Kilah, Senior Lecturer in Chemistry at the University of Tasmania, puts it plainly: vinegar is "an excellent cleaner for showers or kettles" because it "can react with and dissolve mineral deposits like limescale" (The Conversation, 13 March 2024).

That makes it unusually relevant here, because every home we clean sits in a hard water area — our guide to removing limescale in a hard water area sets out the water-industry data behind that and why detergent does nothing at all to scale. If you keep one bottle of vinegar in the house for one purpose, limescale is the purpose.

What it is not is a cleaner in the general sense. Vinegar contains no surfactant, so it does not lift and suspend soil the way washing-up liquid or a professional detergent does. On greasy kitchen surfaces, body soil in a bathroom or a grubby floor it underperforms a cheap detergent, and it leaves a smell that then has to be dealt with too.

Bicarbonate of soda: a weak alkali and a mild abrasive

Bicarbonate of soda works in two completely separate ways, and it helps to keep them apart. Chemically it is, in Kilah's words, "a relatively weak base" — a mild alkali. Physically it is a fine powder that scours.

The alkali side is why it turns up in every oven-cleaning video. Alkalis are what break down fats and oils; Dri-Pak's explanation of why soda crystals shift grease is simply that "Soda Crystals are alkali and therefore dissolve oils and fats", and on bicarbonate it adds the important caveat that it "can also be used, but it will be slightly less effective because it's less alkali" (Dri-Pak FAQs). That is the honest position: against grease, bicarbonate is the weakest option on the shelf rather than a secret weapon. Our guide to cleaning an oven without harsh chemicals sets out the method we actually use, which leans on a proper alkaline degreaser and dwell time instead.

The abrasive side is where bicarbonate earns its place, and it is also where it does damage. Which? describes it as mildly abrasive and advises keeping it away from "materials with high-shine or polished finishes", naming mirror-finish stainless steel, chrome and plastic trims, along with non-stick cookware and air fryer baskets, where its scientific adviser Jacob Compton warns that "abrasive cleaning could damage the coating" (Which?, 11 June 2026).

One further limit, from the same article: bicarbonate "lacks the same disinfecting properties as bleach", so it is not the product for a surface that needs to be made safe rather than clean.

Mixing them is the one thing not to do

This is the part that surprises people, because the fizz looks so much like something working. An acid and an alkali put together do not combine their strengths; they cancel each other out. Kilah sets out the reaction — "this reaction forms water, sodium acetate (a salt) and carbon dioxide – the fizzy part" — and his verdict on the spectacle is that "the fizzy action is essentially a visual 'placebo', formed by the combination of an acid and a base".

He also does the arithmetic that settles the argument. Because the usual recipes use a large excess of one ingredient, after the bubbling stops "over 99% of the added baking soda remains" — baking soda being the US name for bicarbonate of soda — so "the active cleaning agent here is actually the baking soda (and the 'elbow grease' of scrubbing)". The leftover sodium acetate is, as the article puts it, an even weaker base than the bicarbonate you started with. You have spent a measure of vinegar to produce a salt that cleans less well than the powder already in your hand.

Which? reached the same conclusion from the testing side rather than the chemistry side. Its scientific adviser Jacob Compton says the two agents cancel each other out, and the tests bear it out: the bicarbonate, salt and vinegar drain remedy produced "little more than a fizzy reaction" on hair and grease clogs, which were still there until the blockage was cleared by plunging, and the same paste on burnt pans was "the least-effective cleaning method" the magazine tried, needing repeated attempts and heavy scrubbing (Which?).

The practical takeaway is simple. If you want the descaling, use vinegar on its own. If you want the scouring or the mild alkali, use bicarbonate on its own. Combining them in a bowl spends both to produce fizz and a weak salt solution.

Neither of them disinfects — and after illness that matters

Cleaning and disinfecting are two different jobs. Cleaning removes soil; disinfecting reduces the number of live organisms left behind. Most of the time cleaning well is what a home actually needs, which is why we do not disinfect every surface on every visit. After a stomach bug, a case of flu or anything involving raw meat juices, disinfection is the job — and this is where the cupboard remedies fail outright.

A 2022 study from the Peter Doherty Institute for Infection and Immunity, published in the journal Viruses, tested ordinary household products against SARS-CoV-2 on surfaces. Bleach, dishwashing detergent and alcohol-based solutions all inactivated the virus. Vinegar did not. The lead researcher, Dr Julie McAuley, summarised it as "vinegar does not work at all". The quantities that did work were small: roughly 2 ml of dishwashing detergent in 1 litre of water, as little as 5 ml of bleach in 1 litre, and alcohol-based products needed to contain more than 40% alcohol (study in Viruses; reported summary).

UK public health guidance points the same way for the winter bug people most often ring us about. For norovirus, the UK Health Security Agency's advice is that "the typical recommendation is to use a 0.1% sodium hypochlorite solution (i.e. 1,000 parts per million (ppm)) for surfaces" — a chlorine product, not an acid or a powder — along with contaminated laundry washed at 60°C. The same guidance notes that "alcohol-based hand sanitisers don't kill norovirus" either (UKHSA, 23 October 2025).

This is the honest limit of eco cleaning, and we would rather state it than market around it. Our guide on whether eco-friendly cleaning products are actually effective covers both halves of that question, and what "chemical-free" actually means explains why we will not use the phrase about our own products.

Where they do real damage

Being cheap and food-safe does not make either product gentle on surfaces. Vinegar is an acid, and acids attack specific materials; bicarbonate is an abrasive, and abrasives scratch specific finishes. Which? published both lists in 2026 — eight things not to clean with vinegar and six not to clean with bicarbonate of soda — and between them they cover most of the expensive mistakes we see in homes. The appliance warnings are echoed by the manufacturers: Bosch's own support pages state plainly that "we advise against descaling your washing machine with vinegar" because of what it does to the rubber parts (Bosch).

Two of those entries come with a live disagreement worth knowing about: product manufacturers sometimes recommend vinegar for descaling kettles and irons, while Which? advises against it for irons specifically. Where a manufacturer's manual and a general cleaning tip conflict on an appliance, the manual wins — it is the document that knows what the inside of your appliance is coated with, and it is the one that governs your warranty.

What we use instead, and when we reach for either

We clean with professional plant-based detergents and reusable microfibre as standard, on every service, at no premium — the method is set out in full in our guide to what eco-friendly cleaning actually is. The reason is not that vinegar and bicarbonate are dangerous; it is that a correctly diluted detergent with proper dwell time and good microfibre out-cleans both of them on nearly every surface in a house, without the smell and without the risk to stone, mirrors and polished metal.

Where we do reach for one, it is for the job it suits. Acid for limescale in bathrooms and kettles in a hard water area. A mild abrasive for a stubborn mark on enamel or a sink. On deep cleaning and end of tenancy cleaning, where limescale and oven grease are usually the two jobs that decide whether a property passes its check-out, we use trade-strength products matched to each one rather than a cupboard remedy, because a fixed-price job does not stretch to three attempts. On carpets and upholstery a weak vinegar solution is part of the published trade stain method, in a very specific role — our guide to removing common carpet stains sets out exactly how diluted and exactly when.

And if you would rather we used something you already own on a particular surface — a stone worktop, a sealed wood floor, a specialist finish — tell us at booking and we will. We bring everything we need, but it is your home and your warranty. Floors are where this comes up most often, and our guide to cleaning hardwood and laminate floors without damage sets out how much water each floor type can actually take.

Eco-friendly cleaning across Berkshire & Surrey

Berkshire EcoClean cleans homes and business premises across Berkshire and Surrey with carefully selected plant-based products and reusable microfibre as standard — eco-friendly cleaning is the whole premise of the business rather than an option bolted on top. We are happy to tell you exactly which products are used in your home and why, including the handful of jobs where we use something stronger and say so. Regular cleaning, deep cleaning, end of tenancy cleaning and commercial cleaning all work to the same standard.

We cover Reading, Bracknell, Maidenhead, Windsor, Ascot and the surrounding Surrey villages — see every area we cover. Request a fixed quote or book online.

Written by the Berkshire EcoClean team from hands-on operational experience across Berkshire & Surrey. Pricing figures cite published UK sources and are reviewed every six months.