If your kitchen smells sour even after the dishes are done, the sponge by the sink is the most likely cause. The fix takes two steps, in a set order. First you clean or replace the sponge, because that is where the smell is being made. Then you light a candle that keeps the clean room smelling clean.
What customers say on Google
View on Google
For that second step, the best candle to remove sponge smell is a 100% beeswax candle with bright citrus notes, and our top pick is Adi. Citrus is the scent most people read as freshly cleaned, and beeswax burns without the black paraffin soot that drifts onto kitchen cabinets. MBur pours every candle in its pure beeswax candle collection by hand in New York City with phthalate-free fragrance, so the clean kitchen you just worked for keeps smelling that way.
Why a kitchen sponge starts to smell like sour milk
A kitchen sponge is built to hold water. Every pore that soaks up suds also traps tiny bits of food. A damp sponge sitting at room temperature stays wet for hours after you set it down.
That mix of water and food feeds bacteria. One of the main ones behind the smell is Moraxella osloensis, the same microbe that gives laundry left too long in the washer its musty odor. As it multiplies, it gives off waste compounds, and those compounds are what your nose reads as sour or damp.
Rinsing the sponge under the tap does little. The bacteria live deep inside the foam, where a quick rinse barely reaches. So a sponge can look clean and still smell worse each day.
That leads to the question most people have when they search for a candle. If the smell starts inside the sponge, what can a flame across the room actually do about it?
What a candle can do once the source is gone
A candle changes how the air in a room smells. It has no way to reach the bacteria inside the foam by your sink. As long as that sponge sits there wet, it keeps making new odor.
Light a heavy scented candle over a sour sponge and you get both smells at once. Fragrance layered on top of damp mildew often smells worse than either one alone. That is why so many people decide candles just do not work in a kitchen.
Flip the order and the result changes. Once the sponge is clean or gone, the room has no new source of odor. A clean-burning candle then lays a steady, fresh scent over a room with nothing left to fight it. That is what removing sponge smell looks like in practice, and it starts at the sink.
How to get rid of sponge smell in about ten minutes
You have a few good options here. Pick the one that fits your kitchen, or use more than one.
Microwave it while it is soaking wet
Research from the USDA Agricultural Research Service on cleaning kitchen sponges found that microwaving a wet sponge on high for one minute killed more than 99 percent of bacteria. Soak the sponge fully in water first. Then squeeze out just enough that it stops dripping.
Never put a dry sponge in the microwave, because a dry sponge can catch fire. Skip this method for any sponge with a metal scrubbing pad. Let it cool for a few minutes before you pick it up, since the water inside gets very hot.
Run it through the dishwasher
The same USDA work found that a dishwasher cycle with heated drying also killed more than 99 percent of bacteria. Clip the sponge to the top rack and run it with your next load. This is the easiest habit to keep, because it rides along with a chore you already do.
Soak it overnight
No microwave or dishwasher? Soak the sponge overnight in hot water mixed with white vinegar and a little salt. Rinse it well in the morning and let it dry all the way through.
Know when to throw it out
If the sour smell comes back within a day of cleaning, replace the sponge. The same goes for a sponge that has started to tear apart. At that point the bacteria have settled in so deep that cleaning stops working well.
To keep the next sponge fresh longer, wring it out hard after each use. Stand it on its edge in a rack so air reaches both sides. A sponge that dries fast gives bacteria much less time to grow.
With the sponge handled, the room is finally ready for the step most people try first.
The candle that keeps a clean kitchen smelling clean
Picture the kitchen at nine at night. The counters are wiped and the fresh sponge is drying on its edge in the rack. The room still holds a faint trace of the onions from dinner. Nothing in there smells bad anymore, but nothing smells fresh either.
This is the moment for our Adi citrus beeswax candle. Its notes are Lemon, Orange, Grapefruit, Mandarin, Tangerine, Lime, Peach, Agave. Citrus peel oil is rich in limonene, the compound people link with a just-cleaned room. That is why so many cleaning products lean on lemon.
The sweetness matters too. Straight lemon can read sharp in a small room. The peach and agave in Adi round off that edge, so the kitchen smells bright and warm at once, like a bowl of ripe fruit on the counter in July.
What Adi is made of matters as much as how it smells:
- 100% beeswax, a single-ingredient wax with no paraffin blended in
- Wooden wicks, with two on the 12 oz size, burning with a soft crackle
- Phthalate-free fragrance
- No chemical dye
- Hand poured in New York City
Each of those choices keeps something out of the air you just worked to clear. The next section shows why that counts for more in a kitchen than almost anywhere else in the house.
Why the wax decides whether the room ends up fresher
A kitchen already collects a lot of what floats in the air. Cooking oil and steam from the stovetop leave a thin film on the cabinets and the wall behind the range. Whatever you burn in that room adds to the same film.
Start with where paraffin comes from. Refineries heat crude oil to split it into gasoline and other fuels. A thick, waxy residue is left behind once those fuels are drawn off. Refiners treat and bleach that residue until it turns white, and the result is paraffin. Paraffin is petroleum waste, poured into a jar.
Research has shown that burning paraffin releases benzene and toluene. Studies have also found formaldehyde among its emissions. Paraffin throws off black soot as well, the dark ring you see on the rim of an old jar. In a kitchen, that soot settles on the same surfaces you just wiped.
Soy is a step up, though many soy candles are blended with paraffin, and labels do not always say so. Many also use toxic fragrances made with phthalates, a group of chemicals added to help scent last. So the word soy on a label tells you little about what is actually burning.
Beeswax is made by honeybees and needs no chemical processing to become candle wax. It has the highest melting point of any common candle wax, so it melts slowly and burns longer. Paired with a wooden wick, that slow, steady burn makes beeswax the cleanest burn you can put in a kitchen.
| What to look at | Paraffin candles | Soy candles | MBur 100% beeswax |
|---|---|---|---|
| Wax | Petroleum residue from oil refining | Soybean oil, often blended with paraffin | Pure beeswax, a single ingredient |
| Wick | Varies, often cotton | Varies, often cotton | Wooden wick, two on the 12 oz size |
| Burn behavior | Low melting point, melts fast | Soft wax, melts fast | Highest melting point, slow even burn |
| Soot | Black soot on jars and walls | Depends on blend and wick | Clean burn |
| Fragrance | Often toxic fragrance with phthalates | Often toxic fragrance with phthalates | Phthalate-free fragrance |
| Dye | Often dyed | Often dyed | No chemical dye |
| Where made | Mass produced | Mass produced | Hand poured in New York City |
The wax sets the floor for everything else on the label. Once that floor is right, the only questions left are which scent and which size suit your kitchen.
Which scent fits your kitchen, best first
Adi ranks first because citrus is the scent most people read as clean the second they walk in. The rest of this list is for readers whose kitchen or nose asks for something a little different.
1. Most kitchens: Adi
Adi suits the kitchen most people have, a room where you cook most nights and clean up right after. The citrus clears the last of the dinner smell without reading like a spray bottle. If your kitchen opens into the living room, the scent carries across the space.
Room fill is the usual worry with an open layout. One customer described how MBur candles handle it:
“They smell up a WHOLE room during the burn & even a while after blowing them out.”
Paige, MBur customer
2. If citrus feels too sweet: Slice of Life
Some people want a kitchen to smell green, like a pot of herbs on the windowsill. Our Slice of Life beeswax candle is made for that kitchen. Its notes are Spearmint, Eucalyptus, Tomato Leaf, Anise, Mint. The tomato leaf gives it the sappy smell of a vine you just brushed past, and the mint keeps it cool.
Slice of Life works well if you cook with garlic or fish often. A cool green scent reads as a clean break after a heavy meal, where sweet fruit might sit on top of it.
3. A small or galley kitchen: the 5 oz size
In a narrow galley or a studio where the kitchen is one wall, the 5 oz size fills the space. It has one wooden wick and burns 40 hours. It fits a room you light a couple of evenings a week.
4. An open kitchen or a nightly burn: the 12 oz size
The 12 oz size has two wooden wicks, which melt a wider pool and push scent farther. It burns 80+ hours. A candle you light after dinner every night stays on the counter for weeks.
Where to place the candle and how to burn it
Set the candle on the counter a few feet from the stove. Keep it out of the path of the range hood, since the draft pulls scent away and makes the flame flicker. Avoid the spot right under the upper cabinets, where heat collects.
Near the sink is a good choice, because that is where the smell started. Leave a little distance from the faucet so water never splashes the wick. A stone coaster or small wooden tray under the jar protects the counter and looks right in a kitchen.
On the first burn, let the melted wax reach the edge of the jar before you blow it out. That can take a couple of hours. It sets an even surface for every burn after it, so the candle keeps burning flat.
Before each burn after that, trim the wooden wick short and brush off any charred bits. A short wick burns with a calm, steady flame. Then let the candle burn for one to two hours after cleanup, which is enough time for the scent to spread through most kitchens.
Open a window for a few minutes while you clean, then close it when you light the candle. Fresh air carries off what is left of dinner, and the candle takes over from there. Never leave a lit candle in an empty room.
But my kitchen still smells after I cleaned the sponge
Then the sponge had company. Check the sink drain first. Food collects in the trap and under the rubber flap of a disposal, and it smells a lot like a sour sponge. Pour boiling water down the drain, or scrub the disposal flap with an old brush.
Next, check the tray under the dish rack and the inside of the trash can lid. Both stay damp and catch scraps. A quick wash with hot soapy water usually clears them.
If the smell is strongest near the fridge, look for leftovers that have stayed too long. The FoodSafety.gov cold food storage chart lists how long each kind of food keeps.
But I already burn a candle in there and it never helped
Look at the order and the wax. If the candle went on while the sponge was still sour, it was working against a live source. If it was paraffin, it added soot and a heavy toxic fragrance to the mix. Clean the source first, then burn beeswax, and the same kitchen smells fresher.
But my kitchen opens straight into the living room
That is a size question. Pick the 12 oz Adi with its two wooden wicks and set it on the counter closest to the living room. The wider melt pool sends scent across the open space.
Questions people ask about sponge smell and candles
How do I get rid of sponge smell fast?
Soak the sponge, then microwave it on high for one minute, or run it through a hot dishwasher cycle. If the smell comes back within a day, replace it. Once the source is gone, light the Adi beeswax candle to bring a fresh citrus scent back to the room.
Can a candle get rid of sponge smell on its own?
A candle cannot reach the bacteria inside the sponge, so the sponge has to be cleaned or replaced first. After that, a clean-burning candle keeps the kitchen smelling fresh. If you prefer green over citrus, Slice of Life brings spearmint and tomato leaf to the counter.
What candle scent makes a kitchen smell clean?
Citrus is the most common answer, because limonene from citrus peel is the smell people link with a fresh room. Adi layers lemon and lime with peach and agave, so it reads clean and warm together.
How long should I burn a candle after cleaning the kitchen?
One to two hours is enough for the scent to spread through most kitchens. On the first burn, let the wax melt all the way to the edge of the jar. For a green scent you can light while you cook, Slice of Life fits a busy stovetop night.
The short answer for your kitchen
Sponge smell comes from bacteria living inside the foam, so the sponge gets cleaned or replaced first. After that, a 100% beeswax candle with phthalate-free fragrance keeps the room smelling fresh without adding paraffin soot to the surfaces you just wiped.
For most kitchens, the pick is the 12 oz Adi ($65). It is the candle that makes the kitchen feel finished at the end of the night, the last thing you light once the counters are clear. Its two wooden wicks melt a wide pool for a room you use every day, and it burns 80+ hours with notes of Lemon, Orange, Grapefruit, Mandarin, Tangerine, Lime, Peach, Agave.
“Everything from this company is amazing so this candle matching that energy is no surprise. Will definitely be buying again.”
Eboni Ellis, on the Adi candle
If your sponge is clean tonight, tonight is the best time to light it, because the room has nothing left to cover.
Bring home the 12 oz Adi beeswax candle for your kitchen, because it is the citrus scent built for the room you clean every night.
Related reading
