Three ingredients handle the majority of household cleaning tasks effectively, safely and cheaply. White vinegar, baking soda and liquid castile soap replace all-purpose spray, bathroom cleaner, toilet cleaner, glass cleaner, drain deodoriser, surface scrub and laundry pre-treatment. The combined cost of these three ingredients is under 15 dollars and they last for months of regular use.
The three ingredients
White distilled vinegar is a 5% solution of acetic acid in water. Acetic acid is a natural disinfectant, effective against most common household bacteria including E. coli and Salmonella. It dissolves mineral deposits, cuts through grease and eliminates odours by neutralising alkaline compounds. It is fully biodegradable and food-safe. Baking soda (sodium bicarbonate) is a mild abrasive and an alkaline compound that neutralises acidic odours and stains. It deodorises, gently scours without scratching. Liquid castile soap is soap made entirely from plant oils, typically olive, coconut or hemp. Unlike synthetic detergents, castile soap is fully biodegradable, contains no synthetic fragrance (if purchased unscented), and has no foaming agents derived from petroleum. Dr. Bronner's unscented castile soap is the most widely available option.
All-purpose surface spray
Combine equal parts white vinegar and water in a glass spray bottle. For fragrance, add 15 drops of tea tree oil (a natural antimicrobial) or leave it unscented. This solution is effective on kitchen counters, appliances, bathroom surfaces, door handles and most non-porous surfaces. Do not use on natural stone (granite, marble) as vinegar can etch the surface. For natural stone, use a small amount of castile soap in water instead. The spray keeps indefinitely.
Bathroom and toilet cleaner
For the toilet: pour half a cup of white vinegar into the bowl, leave for 15 minutes, then sprinkle with baking soda, scrub with a brush and flush. This removes mineral staining, kills bacteria and deodorises without bleach or chemical cleaners. For bathroom surfaces (tiles, sink, tub): make a paste from baking soda and a few drops of castile soap. Apply with a damp cloth or brush, scrub, rinse. For soap scum on glass shower screens: spray with undiluted white vinegar, leave 5 minutes, wipe with a microfibre cloth.
“Never mix vinegar and bleach. The combination produces chlorine gas, which is acutely toxic. Use them separately, never together.”
Glass and mirror cleaner
Combine 2 tablespoons of white vinegar with 1 cup of water in a spray bottle. Spray onto glass or mirrors and wipe with a microfibre cloth or crumpled newspaper (which leaves no lint). This is more effective than most commercial glass cleaners and leaves no residue. For heavily soiled glass, increase the vinegar proportion.
Laundry and dishes
For laundry pre-treatment: apply undiluted castile soap directly to the stain, work in gently, leave for 5 minutes, then wash normally. For dishes: add a tablespoon of castile soap to a basin of warm water and wash as normal. For the dishwasher, add half a cup of white vinegar to the rinse aid compartment to reduce mineral deposits and improve shine. For drain deodorising: pour half a cup of baking soda down the drain followed by half a cup of white vinegar. The fizzing action loosens debris. Leave for 15 minutes then flush with hot water.
Start with the all-purpose spray
Make a batch of vinegar-water spray in a glass bottle this week. Use it to replace your regular surface cleaner for two weeks. Most people find they prefer the result within days.
Total setup cost
A 5-litre bottle of white vinegar (under 5 dollars), a 1kg box of baking soda (under 2 dollars), and a 500ml bottle of unscented castile soap (under 10 dollars). Total under 17 dollars for 3 to 6 months of cleaning products.
What to keep
Genuine disinfection for specific situations such as food preparation surfaces after raw meat may warrant a dedicated food-safe disinfectant. For everyday cleaning, the three-ingredient approach is sufficient.