Eco-friendly cleaning: simple recipes and swaps

Conventional cleaning products often contain synthetic fragrances, preservatives and surfactants that linger in indoor air and wash into waterways. Simpler alternatives — white vinegar, bicarbonate of soda, castile soap — clean effectively, cost less, and come in minimal or recyclable packaging.

Why simpler is often better

Most homes stock far more specialist cleaning products than they need. A separate spray for every room and surface is a relatively modern habit, driven largely by marketing rather than cleaning science. The practical case for simpler cleaning is strong:

• Fewer synthetic chemicals in your home. Many commercial cleaners contain fragrances, dyes and preservatives that contribute to indoor air pollution. Volatile organic compounds (VOCs) from cleaning sprays can reach higher concentrations indoors than outdoors. Simpler products reduce your exposure.
• Less packaging waste. A bottle of white vinegar and a box of bicarbonate of soda replace several spray bottles. Both come in glass or cardboard, which is more widely recycled than the mixed plastics used in most cleaning products.
• Lower cost. White vinegar, bicarb and castile soap are among the cheapest cleaning agents available per use. Making your own spray costs a fraction of a branded equivalent.
• Better for waterways. Simpler formulations biodegrade more readily. Many conventional surfactants and synthetic fragrances persist in aquatic environments and are toxic to some aquatic life.

The honest caveat: homemade cleaners are not always as powerful as specialist commercial products for every job. Heavy limescale, severe mould or specific disinfection tasks (such as after handling raw chicken) may still call for a targeted commercial product. The goal is to use the simpler option where it works — not to suffer a dirty home in the name of principle.

Your core cleaning kit

These five items cover the vast majority of household cleaning tasks:

• White vinegar (distilled). Mildly acidic (typically 5% acetic acid), which makes it effective at cutting grease, dissolving limescale and mild disinfection. Widely available and inexpensive. Note: do not use on natural stone (marble, granite, limestone) or cast iron — the acid damages these surfaces.
• Bicarbonate of soda (baking soda). A mild abrasive and deodoriser. It fizzes on contact with acids (vinegar, lemon juice), which helps lift grime mechanically. Effective for scrubbing sinks, baths and ovens, and for absorbing fridge odours.
• Castile soap. A vegetable-oil-based soap, traditionally from olive oil, now also made from coconut or hemp oil. It's a genuine, biodegradable soap — not a synthetic detergent — and cuts grease and general dirt well. Available as a liquid (concentrated — dilute before use) or as a solid bar. Dr Bronner's is the most widely recognised brand but many others exist.
• Lemon juice (or citric acid). Similar to vinegar in its acidic action — good for descaling, brightening and cutting through grease with a more pleasant smell. Fresh lemon, bottled lemon juice or citric acid powder (sold in supermarkets for brewing or baking) all work.
• Microfibre cloths. Good-quality microfibre cloths clean effectively with just water on many surfaces — no product needed at all for light cleaning and dusting. Important caveat: microfibre is a synthetic plastic material and sheds microfibres into wastewater when washed. Wash microfibre cloths in a microfibre-catching laundry bag (such as a Guppyfriend bag) to reduce the amount released. Use fewer cloths rather than building up a large collection.

Optional additions that broaden your range: tea tree oil (antifungal, antibacterial — a few drops added to a spray), washing soda (sodium carbonate — stronger than bicarb for heavy grease and laundry), and hydrogen peroxide 3% (a mild bleaching and disinfecting agent, unstable in light so store in a dark bottle).

Simple recipes

All recipes use a reusable spray bottle or container. Label each bottle clearly.

All-purpose spray

Suitable for: kitchen surfaces, hobs, sinks, bathroom surfaces, most hard surfaces. Not for: natural stone, cast iron.

1. Fill a 500 ml (roughly 16 fl oz) spray bottle with equal parts water and white vinegar.
2. Add 10–15 drops of essential oil if desired (tea tree, lavender or lemon all work well) and shake gently.
3. Use as you would any kitchen or bathroom spray. Wipe with a cloth or paper towel.

For more cleaning power on grease, add a few drops of liquid castile soap. Note: soap and vinegar partially neutralise each other — if you add both, the result is less effective than each used separately. Use either a vinegar spray or a castile soap spray for a given job, not both at once.

Glass and mirror cleaner

1. Mix 2 parts water, 1 part white vinegar in a spray bottle.
2. Optionally add 1 teaspoon of cornflour (cornstarch), which helps achieve a streak-free finish — shake well before each use.
3. Spray onto glass and wipe with a scrunched sheet of newspaper or a clean microfibre cloth in circular motions.

Scrub paste for sinks, baths and hobs

1. Put 3–4 tablespoons of bicarbonate of soda into a small bowl.
2. Add enough liquid castile soap to form a paste (roughly 1 tablespoon — adjust to consistency).
3. Apply to the surface with a cloth or sponge, scrub, then rinse thoroughly.

For extra deodorising (in a bin or fridge), use bicarb dry — sprinkle it and leave for 15–30 minutes, then wipe away.

Drain care

This method helps prevent build-up in slow drains and shifts minor blockages. It will not clear a severely blocked drain — for that, a drain snake (plunger) is more effective than any chemical.

1. Pour 3–4 tablespoons of bicarbonate of soda directly into the drain.
2. Follow with half a cup (about 125 ml) of white vinegar. It will fizz — this is the bicarb and acid reacting, which helps loosen debris.
3. Leave for 15 minutes, then flush with a full kettle of boiling water.

Descaling a kettle or showerhead

Limescale is calcium carbonate, which dissolves in mild acids.

Kettle: Fill with equal parts water and white vinegar (or 1–2 tablespoons of citric acid dissolved in water). Bring to the boil, leave for 30 minutes, then pour out and rinse twice with fresh water before using.

Showerhead: Fill a plastic bag or container with undiluted white vinegar (or a citric acid solution — 1 tablespoon in 250 ml water). Submerge the showerhead and secure with a rubber band if needed. Leave for 1–2 hours, then remove and run the shower briefly to flush through.

Oven cleaner

1. Make the scrub paste (bicarb and castile soap) and spread it over the cool interior of the oven, avoiding heating elements.
2. Leave overnight (or at least 4 hours).
3. Wipe away with a damp cloth. For stubborn spots, spray a little white vinegar directly on the residue — it will fizz and help lift it.
4. Wipe clean and rinse. For very heavily soiled ovens, a second application may be needed.

Safety: what never to mix

Other safety points to keep in mind:

• Concentrated castile soap can irritate skin and eyes — dilute before use and keep away from young children.
• Essential oils are concentrated plant extracts and can cause skin sensitisation or allergic reactions in some people. Use them in the small quantities these recipes suggest. Some essential oils are toxic to pets — tea tree oil in particular is harmful to cats and dogs, even in diluted form.
• Hydrogen peroxide at 3% is safe for household use but will bleach coloured fabrics and should be stored in a dark bottle, away from heat.
• Label all homemade cleaning bottles clearly, including what's in them — never store in food containers.

Reduce single-use cleaning

Beyond the recipes, cutting the packaging from cleaning products makes a real difference:

• Refill stations. Many zero-waste shops, some supermarkets and health food stores now offer refills for washing-up liquid, laundry liquid and all-purpose cleaners. Bring your own bottle and pay by weight or volume. This eliminates the packaging cycle entirely for those products.
• Concentrated products. Several brands sell highly concentrated versions of their cleaning products in small bottles — you dilute them at home in a reusable spray bottle. The ratio of product to packaging is much better than ready-to-use sprays (which are mostly water).
• Cleaning tablets and strips. Compressed cleaning tablets or dissolvable strips that you drop into water in a spray bottle have become widely available. They're compact, low in packaging and effective for most everyday cleaning tasks.
• Reusable cloths over disposable wipes. Kitchen roll and cleaning wipes are single-use. Washable cloths — even cut-up old T-shirts — do the same job and last years. Keep a collection for different tasks (one set for food surfaces, one for cleaning).
• Washable mop heads instead of disposable ones reduce both plastic and ongoing cost significantly.

What eco-labels do and don't mean

Cleaning products increasingly carry environmental claims. Some are meaningful; others are vague or unverifiable.

• Certified logos (such as EU Ecolabel, Nordic Swan, EPA Safer Choice in the US, or ECOCERT) require products to meet specific, independently verified criteria for biodegradability, aquatic toxicity and packaging. These are more reliable than self-declared claims.
• "Natural", "green" and "eco" have no legal definition in most markets and can appear on products with little to no environmental benefit. They are marketing terms, not quality standards.
• "Biodegradable" is similarly unregulated in most places. Many synthetic chemicals technically biodegrade eventually — the question is how quickly and into what byproducts. "Readily biodegradable" to a recognised test standard (like OECD 301) is more meaningful.
• "Plant-based" means ingredients are derived from plants, not that they're harmless or that the product is low-impact overall. The processing and formulation matter too.
• Packaging claims: "recyclable" means it can be recycled in theory — but kerbside collection varies widely by area. Check what your local authority actually accepts.

The most reliable way to reduce the impact of your cleaning products is to use less product overall, choose simple formulations with short ingredient lists, buy concentrates or refills, and use reusable cloths. These choices are more effective than navigating marketing language on a bottle.

Your eco cleaning checklist

• Buy a bottle of white vinegar and a box of bicarbonate of soda this week.
• Make one all-purpose spray in a reusable bottle — replace at least one commercial product.
• Switch from disposable kitchen roll to washable cloths for everyday wiping.
• Look for a refill or concentrate option for your next laundry or washing-up product.
• Wash microfibre cloths in a microfibre-catching bag.
• Check your cleaning products for certified eco-labels rather than vague marketing claims.
• Remember: never mix vinegar/acids with bleach.