Three Ingredients, One Cupboard: Making the Most of Your Bicarb, Vinegar and Citric Acid Refills

Why not stocked up on bicarbonate of soda, cleaning vinegar and citric acid from our Full Circle refill hub, you then have almost everything you need to clean your whole home — no plastic bottles, no harsh chemicals, and a fraction of the cost of branded sprays. The trick is knowing which ingredient to reach for, and when.

Several well-known cleaning writers have built entire books around this same store-cupboard approach:

• Lynsey Crombie, TV's "Queen of Clean," shares white vinegar, lemon and bicarb hacks in her book The Easy Life, favouring white wine vinegar in particular for tackling mould, limescale and glass.
• Nancy Birtwhistle, the Great British Bake Off winner turned eco-cleaning champion, dedicates much of Clean & Green to natural, store-cupboard alternatives to chemical cleaners — bicarb and vinegar included.
• Mr Carrington (Iwan), from Sort Your Life Out and author of Clean in 15, swears by a simple bicarb-and-vinegar combination to clear slow-running drains.

Here's how to put your own refill stock to work.

Bicarbonate of soda: the gentle scrub and odour-eater

Bicarb is a mild abrasive and deodoriser — brilliant for cutting through grime without scratching surfaces. Worth knowing: on its own, it's not a disinfectant, so it's best suited to grime and odour jobs rather than germ-killing.

• Fridge odours — a small open dish at the back of the fridge quietly absorbs food smells.
• Shoe odours — a sprinkle inside trainers overnight, shaken out before wearing.
• Grease and hob marks — make a paste with a little water, scrub on, leave a few minutes, then wipe away.

Cleaning vinegar: mould, limescale and glass

White/cleaning vinegar is stronger than table vinegar and is the one to reach for on:

• Bathroom mould and limescale — on taps, showerheads and glass.
• Windows and mirrors — leaves a streak-free shine.
• Lingering odours — the vinegar smell fades as it goes, taking other odours with it.
• Dishwasher seals — a spray of 50% vinegar, 20% neat lemon juice, 30% water wipes seals clean.

Citric acid: the limescale specialist

Citric acid and vinegar are both mild acids, so they're doing similar jobs — but citric acid is the sharper tool for descaling specifically:

• Kettle — a tablespoon of citric acid in 500ml water, boil, leave 15–20 minutes, rinse.
• Toilet limescale ring — a tablespoon swished round the bowl, left 15–20 minutes, then flushed.
• Washing machine or dishwasher — half to one cup in the drum, run the hottest, longest cycle, then wipe down seals and gasket.
• Hard-water window marks — two tablespoons dissolved in a cup of hot water, sprayed and wiped.

Two more from Fill: washing machine and plughole

Refill brand Fill shares a couple of neat step-by-step routines worth passing on:

Clean your washing machine like a dream

1. Mix 50ml cleaning vinegar with 50ml water.
2. Use a damp cloth with the mixture to clean the drum, seal, door and tray.
3. Add 450ml cleaning vinegar to the drum.
4. Run the machine on a hot wash (60°C+).
5. When it stops, open the door and leave it for a while — overnight is fine. Your place might smell like a kombucha factory at first, but it passes.
6. This helps move limescale out of the machine beautifully.

A few safety notes worth keeping in a public post: vinegar is acidic, so don't use it on natural stone (granite, marble, quartz), unsealed grout or waxed surfaces — test on an out-of-sight area first, dilute if in doubt, and wear gloves.

Unblock your plughole

1. Pour boiling water from the kettle down the plughole.
2. Drop in 1 tbsp bicarbonate of soda.
3. Follow up with 250ml cleaning vinegar.
4. Watch it fizz.
5. Put the plug in and wait 10–15 minutes.
6. Flush with more boiling water.

The one rule that ties it all together: layer, don't mix

A common myth is that combining ingredients makes a stronger cleaner. In practice:

• Bicarb + vinegar work best used one after the other on the same spot — sprinkle bicarb first, then add vinegar and let it fizz — rather than pre-mixed in a bottle, where the reaction happens instantly and mostly cancels both out.
• Vinegar + citric acid don't need combining at all — they're both acids doing the same kind of job, so combining them doesn't add power, it can just make the mix less effective as the two compete rather than complement each other. Pick one for the task.
• Never mix any acid (vinegar or citric acid) with bleach — this produces toxic chlorine gas. Worth a clear one-line warning in a public post, even though it's not something readers would be doing with refill stock.

The upshot: three simple refills, used in the right order for the right job, cover almost every clean in the house — and each top-up means one less single-use bottle.

Sources and further reading: Lynsey Crombie, The Easy Life; Nancy Birtwhistle, Clean & Green; Mr Carrington, Clean in 15; washing machine and plughole routines courtesy of Fill.