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.
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.

Acid or base? The key distinction
Every kind of dirt has its „opposite”. This table sends each problem to the right agent.
| Task | Right choice | Why |
|---|---|---|
| Limescale, urine scale | Citric acid (acid) | Acid dissolves calcium carbonate, see limescale guide |
| Grease, burnt-on | Washing soda or baking soda (base) | Bases split grease, washing soda is the stronger option |
| Odours | Baking soda | Binds odour molecules instead of masking them |
| Scouring (sink, joints) | Baking soda as a paste | Fine 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
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.
Drain freshener
2 tbsp baking soda into the drain, flush with plenty of hot water. Binds odours. Stubborn blockages need mechanical clearing.
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.
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
Frequently asked
What is the difference between baking soda and washing soda?
Can I use baking soda and vinegar together?
Does baking soda or citric acid help against limescale?
Are these home remedies really more eco-friendly?
Clean naturally, all through the house
From home remedy to special case, we judge honestly, you decide.
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