Baking soda, washing soda and citric acid

Magazine · Household

Baking soda, washing soda and citric acid: the three that do almost everything

Three cheap staples replace half a shelf of cleaners. The trick is knowing which one is right when.

The short version

It comes down to one question: acid or base? Against limescale only acid helps (citric acid), against grease and odour the bases baking soda and washing soda. Get that and you clean almost everything with three cheap powders, and never mix soap with acid.

Under many sinks a dozen special cleaners pile up, most of them doing the same thing. Yet three simple staples handle the bulk of the work: baking soda, washing soda and citric acid. They are cheap, economical and come without microplastics, more in our magazine.

To make them work, you only need to use them correctly. That is exactly what we will cover, from the basics through concrete recipes to the honest limits where a home remedy is no longer enough.

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The three staples

Baking soda

Mildly alkaline, fine. Binds odours, cuts grease and works as a gentle scouring agent. The all-round powder for kitchen and bathroom. Barely attacks surfaces.

Washing soda

More strongly alkaline than baking soda. Top against stubborn grease, burnt-on pots and in the laundry. Wear gloves, it is more powerful.

Citric acid

The acid of the trio. Dissolves limescale on taps and in the kettle, almost odourless. With appliances and heat, use lukewarm only.

Baking soda in a bowl
Baking soda is the all-rounder, washing soda the strong sibling, citric acid the limescale specialist.

Acid or base? The key distinction

Every kind of dirt has its „opposite”. This table sends each problem to the right agent.

TaskRight choiceWhy
Limescale, urine scaleCitric acid (acid)Acid dissolves calcium carbonate, see limescale guide
Grease, burnt-onWashing soda or baking soda (base)Bases split grease, washing soda is the stronger option
OdoursBaking sodaBinds odour molecules instead of masking them
Scouring (sink, joints)Baking soda as a pasteFine enough not to scratch

Remember

Never mix soap with vinegar or acid, both curdle and cancel each other out. Soap cleans, acid descales, used separately. Why a good soap can do so much is in our big soap guide.

Three everyday recipes

1

Scouring paste

Stir baking soda with a little water into a paste. Apply to sink, hob or joints, let it act briefly, rub off, rinse clear.

2

Drain freshener

2 tbsp baking soda into the drain, flush with plenty of hot water. Binds odours. Stubborn blockages need mechanical clearing.

3

Descaling solution

2 tbsp citric acid in 500 ml lukewarm water. For taps and kettle, step by step in the limescale guide.

Where home remedies reach their limit

Honest is honest: some things baking soda and co. cannot manage.

  • Old, thick limescale crusts: here a stronger descaler helps.
  • Mould in joints: needs a targeted product, not just baking soda.
  • Natural stone: no acid, indoors or out.
Recommendation

Stock the home-remedy trio

With a small supply you have most cleaning jobs covered. What to look for:

  • Keep baking soda and washing soda separately (mild and strong)
  • Citric acid as a powder, more economical than ready-made solutions
  • Bulk packs are cheaper and save packaging
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Frequently asked

What is the difference between baking soda and washing soda?
Both are alkaline, but washing soda is much stronger. Baking soda is mild and versatile for kitchen and bathroom, washing soda for stubborn grease and laundry, then with gloves.
Can I use baking soda and vinegar together?
They fizz spectacularly but largely cancel each other out chemically. It is more effective to use them separately: baking soda for scouring, acid against limescale.
Does baking soda or citric acid help against limescale?
The acid, so citric acid. Baking soda is alkaline and does not dissolve limescale. The full how-to is in the limescale guide.
Are these home remedies really more eco-friendly?
Usually yes: economical, readily biodegradable and free of microplastics. The key is to use them appropriately rather than mixing everything together.
MS
Magic Soap editors
We write clear, honest guides about soap, care and natural cleaning. Our recommendations are made independently, tested and fairly judged.

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