How to mix citric acid for cleaning

If citric acid sounds familiar, it's probably because you've seen it on a label. You can't really miss it, as it's in everything from food items like wine and hummus to beauty products. What most people don't realize, though, is that it also makes for a super-versatile, all-natural cleaning ingredient for your healthy home.

Baking soda is often touted as the best cleaning ingredient. It's safe on a variety of surfaces, banishes odor, and even helps to keep the sparkle in your white sneakers. But citric acid is often overlooked when it comes to sprucing up your home. In powder form (like this highly-rated option from Amazon), "citric acid helps break down any gunk, grime, and build-up," says Melissa Maker, founder of Clean My Space. Citric acid can be used easily to safely to rid your home of bacteria, mold, and mildew.

The fact that citric acid is ingestible and used in food makes it a harmless choice for cleaning your home. You can clean surfaces that come in contact without worry. If you want to retire your baking soda for a while, the ways to use it are endless.

1. Deep-clean your coffee pot

To give your coffee machine a deep-clean, fill the reservoir with water and add in a couple teaspoons of citric acid. Once it's done brewing, any build-up will be gone.

2. Clean your toilet bowl

Creating a natural toilet bowl cleaner is easy. Just add a tablespoon into the water and let it sit for 15 to 20 minutes before flushing it away.

3. De-gunk the dishwasher

Cleaning your dishwasher isn't easy—unless you have citric acid on hand. Fill the detergent cup with the powder—a Tablespoon or two should do it—and run the dishwasher on a hot cycle, letting it do its thing. All the grime and build-up hanging out in there will be broken down and rinsed away.

4. Get rid of mineral deposits

Mineral deposits from hard water are tricky to get rid of—especially those on bathroom fixtures and sinks. Citric acid is a natural way to remove them, and all you need to do is add a few tablespoons to hot water, then scrub with a sponge and rinse.

5. Clean surface areas

By adding a couple tablespoons of citric acid into a spray bottle filled with water, you'll have a mixture you can use to clean your shower, kitchen countertops, and more. Just avoid using citric acid on natural stones, like granite and marble, as the acid will cause damage.

Now that your home sparkles, here' how to bring some magic to the office:

Here are some other all-natural cleaning products you can use to tidy up your home. Then find out how to speed-clean your home in 30 minutes or less.

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For a few months running, I was on a tear to discover all I could about citric acid. What I’ve learned, tested, and tried is amazing. So get ready as I lay out the case for adding citric acid to the list of cheap natural products we need to keep our homes sparkling clean.

What is Citric Acid?

Citric acid, also known as “sour salt,”  is a colorless weak organic acid. I know, it sounds like a poisonous substance, but it is a low-level acid that’s both safe and strong enough to break down soap scum and dirt. This acid occurs naturally in citrus fruits, such as lemon, limes, and pineapple. Mixed with water, citric acid powder makes a homemade miracle solution for most of your tough stains. It is an excellent all-purpose cleaner powerful enough to kill molds, remove soap scum, and even tackle rust. It’s not dangerous or toxic, although, as with lemon juice, you don’t want to get it in your eyes.

When added to commercial cleaning products, citric acid can help remove hard water build-up on glass. Use it to remove coffee and tea stains, yellowing/browning discolorations, hard water marks, urine stains, and much more.

Where Can I Get Citric Acid?

The most basic source is to squeeze the juice from a lemon, as it contains 5% to 8% citric acid. But that is neither economical nor convenient. A much easier and more reliable version of citric acid for the uses that follow is its refined powder form. You will find citric acid in most supermarkets, at Target and Walmart with the canning supplies. Citric acid is also readily available online. A pound of citric acid will last a very long time as it takes so little to achieve fabulous results.

Citric Acid 1 pound

• 🥫 Used in canning to improve the flavor and color of some foods
• 🍃 Organic cleaner for dishwashers, coffee machines
• 💧 Removes hard water stains
• 🇺🇸 Made in the USA

Pro Tip

Breathing in citric acid dust can cause nose and throat irritation. It can also be an eye and skin irritant. You may want to protect skin and eyes and establish appropriate ventilation while working with citric acid.

CAUTION: Do not use citric acid on granite, marble, painted or gold-, platinum-, or silver-trimmed dishware. Acids of any kind (vinegar, lemon juice, citric acid) can remove the very important sealants on these products; remove paint, or damage the stone. Do not use on painted or sealed wood surfaces, i.e hardwood floors.

Make all-purpose cleaner

To make an easy-peasy, tough-as-nails homemade cleaning solution, boil two cups of water, then mix in two tablespoons of the powder. Let this Citric Acid All-Purpose Cleaner cool, then apply it to a clean cloth and wipe down any dirty surfaces. If there’s any left, pour it down the toilet to disinfect.

Deep-clean a coffeemaker

To give your coffee machine a deep clean, first, empty the carafe of any leftover coffee and empty the filter basket. Rinse the carafe and filter basket, then replace both in the machine.

Next, pour about 2 tablespoons citric acid into the carafe and fill the rest with water. Stir to dissolve. Pour this in its entirety into the reservoir and set the machine to brew.

Once brewing is complete, throw out the water in the carafe and run a second (and third, as needed) pot of clear water to sweep away any citric acid that may be lingering. Any mineral build-up inside the machine will be gone, and the glass carafe will be sparkling clean. Repeat monthly.

De-gunk the dishwasher

With regular use, hard water deposits build up in dishwashers, their hoses, and connectors. Citric acid can get in all of those small crevices to break down and remove that build-up. I have previously suggested lemon Kool-Aid for its high concentration of citric acid—and that works—but citric acid can be used directly.

Fill the empty dishwasher’s detergent cup with powdered citric acid and run as usual, set to the hottest and longest cycle without any dishes. Run a second time with regular detergent (and dishes if you want) to clear out any mineral deposits that may have lingered.

Electric or stovetop kettle

Mineral deposits build up quickly and can be difficult to remove from a tea kettle—stovetop or electric model. Boiling water and a little citric acid can take care of that; no scrubbing is required.

Fill the kettle halfway and turn it on to boil. Once it’s boiling, remove it from the stove (or switch the electric model off) and drop one tablespoon of citric acid (2 tablespoons for an extreme situation)  into the water. Leave it to sit for 15 to 20 minutes. Rinse, and the pesky minerals will be gone.

Toilet bowl ring

While there are several ways to get rid of that stubborn toilet bowl ring, dissolving it with citric acid is one of the easiest. Pour one tablespoon of the powder into the toilet bowl, swish it with a toilet brush, then let it sit for 15 to 20 minutes. Flush. The bowl will sparkle like new.

Clean surface areas

By adding a couple of tablespoons of citric acid into a spray bottle filled with water—or your premade Citric Acid All-Purpose Cleaner (above), you’ll have a mixture you can use to clean your shower, kitchen countertops, and more. Avoid using citric acid on natural stone, like granite, and marble, as the acid can cause damage.

Countertop oven racks

If yours are like mine, those toaster oven racks can get pretty gross with food drippings, oil, and grease that has become baked on, making them difficult to clean. A quick soak in citric acid and water can break down the grease for easy cleaning.

Put two heaping tablespoons of citric acid in a bucket [deep-sink, bathtub) of hot water so the powder dissolves. Next, add the racks and let them bathe for 20 to 30 minutes. Grease stains should come off easily with a good scrubbing brush.

Hard water deposits in humidifiers

Humidifiers are prone to a build-up of hard water deposits at the water tank base and around the heating port. If you’ve attempted to scrub this area using vinegar, baking soda, and every other thing you could think of to get it clean—without success—a good sprinkling of citric acid powder along with a brush or sponge, works wonders to remove the build-up with minimal scrubbing.

Boil six to eight cups of water, depending on the size of your humidifier, and grab your powdered citric acid. Remove the water tank and pour enough citric acid into the base to cover the surface area. Next, pour in the boiling water. Add citric acid as needed to cover the affected area. Let it sit for five minutes, then scrape away the deposits. Repeat this process as often as needed, but should be infrequent.

Descale tankless water heater

Sure, your coffeemaker needs to be “descaled” regularly, but so does that big appliance that makes hot water for the household. Good news! Citric acid is a perfect and natural solution to flush out your water heater.

To clean a tankless water heater, pour 1 cup of citric acid powder into 10 liters (about 2.5 gallons) water and pour the liquid into the cold water valve of your water heater. Let the solution sit for 8 hours. Next, connect a hose to the drain connection at the bottom of the heater and rinse it out into a sink or large bucket. You’ll see all of the deposits flushed out into the container.

If yours is a tank-style water heater, check the owner manual for details on flushing and descaling it, as this varies from one manufacturer to another.

Water-stained windows, shower doors

Because citric acid clears out hard water, it’s a perfect solution for removing water stains on windows. Combine two tablespoons of the powder plus one cup of hot water in a spray bottle. Shake it up to dissolve the powder and spray it directly onto the window. Wait a minute, then wipe the solution away for crystal clear windows.

Dull streaked mirrors

Citric acid is ideal for cleaning gunk, smudges, and streaks from mirrors. Fill your spray bottle with one part citric acid and one part white vinegar, and liberally spritz the mirror. Wipe with a cleaning cloth (and a squeegee, if you have one) and dry with a microfiber towel.

Dirty stained grout

Citric acid will scrub grout for you. Just put one tablespoon of powdered citric acid into a spray bottle with two cups (16 oz)) hot water and shake to dissolve. Spray the grout and wait a few minutes, then effortlessly wipe away dirt and grime from the grout, and tile, too..

Pro Tip

General use and cleaning can wear away the all-important sealer applied when the grout was installed. It should be re-sealed at least annually.

Rusty garage and garden tools

Rust on tools like wrenches, pliers, screwdrivers, rakes, and trowels make them unpleasant, if not difficult, to use. Instead of replacing them because they’re gross and uncooperative, make up a rust removal solution with citric acid.

Make up a batch of Citric Acid All-Purpose Cleaner (see above) and pour it into a bucket or other container big enough to hold your rusted tools. Soak the items for 30 minutes to an hour, then clean with a scouring pad or brass wire brush. Continue to dunk and scrub, letting the tools sit periodically for the solution to continue to lift the rust. Dry your tools immediately, then oil them with mineral oil or clean motor oil after each use to prevent future rusting.

Dull stainless steel

Citric acid is a fabulous way to clean stainless steel appliances. Expect to remove dirt and grime you didn’t even notice was there. For sure, you’ll notice the difference afterward when those surfaces are squeaky, sparkling clean!

Mix a Citric Acid All-Purpose Cleaner (1 tablespoon to 2 cups hot water) in a spray bottle. Spray the appliances, and allow them to sit for three to five minutes. Wipe away the solution, then rinse with a wet cloth. Finally, dry with a microfiber cloth working in the direction of the grain,  until completely dry and super shiny!

Grimy countertops

Citric acid is a natural and effective way to clean all sorts of surfaces, from glass stovetops to butcher blocks. Simply spray the counter with your Citric Acid All-Purpose Cleaner (see above). Let stand for one to two minutes, then rinse and wipe dry. Your countertops will not only be clean but sanitized as well. However, do not try this method on granite or marble, as the acid mixture can damage those fancier countertops’ sealant.

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