Homemade All-Purpose Cleaner (3 Ingredients, Tested)
The homemade all-purpose cleaner that actually replaced the store bottle in this house is three ingredients: two cups of warm water, half a teaspoon of washing soda, and half a teaspoon of liquid castile soap, shaken gently in a spray bottle. It cuts kitchen film, wipes tables and painted surfaces, and costs pennies a bottle. It is a cleaner, not a registered disinfectant — an honest distinction this post keeps throughout — and it earns its shelf space on the everyday-wipe jobs, which are most jobs. Here’s the recipe, why each ingredient is there, and the results of running it against a family kitchen for a season.
The recipe
- 2 cups warm water (warm helps the washing soda dissolve)
- ½ teaspoon washing soda (sodium carbonate — the degreasing muscle)
- ½ teaspoon liquid castile soap (the grime-lifter)
- Optional: a strip of lemon peel steeped in the finished bottle for scent — peel, not juice
Dissolve the washing soda in the warm water first, add the soap last, cap and tip gently to mix (hard shaking just makes foam). Label the bottle — my grandmother’s card file is emphatic about labeling, and she was right; a house with kids should contain zero mystery spray bottles.
Why these three ingredients
Washing soda is the old laundry-aisle workhorse: strongly alkaline, which is exactly what dissolves the greasy film that settles on every kitchen surface. But alone it’s harsh and gritty-feeling. The castile soap wraps that alkalinity in a gentler grime-lifting vehicle and helps everything rinse away — the same one-bar logic covered in castile soap uses. Water does the diluting, because at spray strength this pair is effective without being hostile to skin or paint. Notice what’s not in it: vinegar. Acid plus soap in one bottle cancels both — the classic Pinterest recipe mistake, explained in the vinegar post — so this cleaner stays alkaline and lets vinegar keep its own separate jobs.
What it’s for (and not for)
Reaches for it: counters after cooking, the table after every meal involving a toddler, cabinet fronts, painted walls and trim, door handles, the high chair, appliance exteriors, the sticky mystery zone around the trash can. In the weekly rhythm it’s the star of Friday kitchen day and the utility player the rest of the week — see how the days divide in the weekly cleaning schedule.
Passes on: natural stone counters (the washing soda is alkaline — safe-ish, but stone makers want pH-neutral, so use plain castile solution there), glass and mirrors (streaks; vinegar’s job), unsealed wood, and anything needing genuine disinfection. After raw chicken or during a stomach bug, clean first with this, then follow with a registered disinfectant used per its label. A homemade spray that claims to disinfect is the one kind of retro thrift this site won’t sell you.
The season-long test
I ran this bottle head-to-head against the name-brand spray for a season of Fridays. Results, honestly: on fresh messes and daily film, indistinguishable. On aged grease — the hood vent’s underside, the splatter zone behind the stove — the homemade bottle needed a second pass or a minute of dwell time where the commercial degreaser won on the first wipe. On smell, the homemade bottle wins by forfeit: it smells like nothing, then like clean. On cost it isn’t close. Verdict: the homemade bottle took the everyday slot permanently; a commercial degreaser stays under the sink for the twice-a-year hood-vent reckoning, which is a fair division of labor between centuries.
Storage and shelf life
Made with tap water, mix quantities you’ll use within a few weeks — it’s soap and mineral salt, not a preserved product. If a batch clouds oddly or separates into curds, dump it and remix (curds usually mean it met an acid — someone “improved” it with vinegar). Keep it out of toddler reach like any cleaner: gentle ingredients are still not a beverage.
FAQ: homemade all-purpose cleaner
Does homemade all-purpose cleaner really work?
For everyday cleaning — grease film, food mess, fingerprints — yes, on par with commercial sprays in my season of testing. Heavy aged grease and true disinfection are the two jobs where store products still earn their keep.
Can I add vinegar to make it stronger?
No — vinegar (an acid) reacts with the castile soap and washing soda (alkalis) and cancels all three, leaving curdled residue. Keep acid cleaners and soap cleaners in separate bottles, used for separate jobs.
Is washing soda the same as baking soda?
No. Washing soda (sodium carbonate) is significantly more alkaline and better at degreasing; baking soda (sodium bicarbonate) is milder and better as a gentle scrub. You can find washing soda in the laundry aisle.
Does homemade cleaner disinfect?
No — this is a cleaner, not a registered disinfectant, and no DIY spray should claim otherwise. Clean with it first, then use an EPA-registered disinfectant per its label when a surface genuinely needs germ-kill.
