Prep first
Before you start
- Let the mud dry, then brush, scrape or vacuum off as much as you can.
- Rinse what is left with cold water.
- Don't rub wet mud in; blot and let it dry first.
Black buildup on a sink or faucet is often mud that has dried into the finish, and waiting only makes it more stubborn. Wiping it while it's wet only spreads it across the surface, so brush away the loose material first. A general cleaner is only for heavy soiling, and the sink material decides how much it can take, so check before you use one.
Black gunk on a faucet usually takes a few gentle passes rather than one hard scrub. Old grime in a bathroom sink drain often needs the same patient approach. If the finish starts to dull, stop and switch to something milder.
Before you start
What sinks can take
Safe to use1
- Water
Use with care4
- Soaking
- Chlorine bleach
- Acids (vinegar, lemon)
- Scrubbing and abrasives
Avoid1
- Solvents (alcohol, spot removers)
6 items
What you'll need
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- Soft brush or a vacuum with a brush attachmentLifts dried mud without pushing it deeper into the surface. (opens Amazon)
- Soft sponge or clothWipes the sink without scratching the finish. (opens Amazon)
- Mild soapThe wipe-down cleaner for vitreous china, used in warm water. (opens Amazon)
- General-purpose cleaner labeled for your sink's materialOnly for heavily soiled spots. (opens Amazon)
- Cold and warm waterCold water rinses first; warm water is for the vitreous china wipe-down.
- Clean dry towelBlots the sink dry without dragging residue across it.
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6 steps
Step by step
Step 1 of 6
Let the mud dry, then brush it off
Leave the mud alone until it has dried, then brush, scrape or vacuum off as much as you can. A vacuum with a brush attachment reaches the edges and the drain opening without pushing the mud further in.
Step 2 of 6
Rinse what is left with cold water
Run cold water over the remaining mud and loosen it with a soft cloth or your fingers. Keep rinsing until the loose residue is gone.
Careful. Hot water first can set the stain, so keep this rinse cold.
Step 4 of 6
Test, then use a general cleaner
Test any cleaner on an inconspicuous spot before using it anywhere else. If the sink is still dirty after the wipe-down, apply a general-purpose cleaner labeled for your material to the spot.
Careful. Don't use cleaners with ammonia, bleach or acid on PVD faucet finishes.
Step 5 of 6
Rinse the cleaner off at once
Rinse completely with water right after applying any cleaner, and don't let it soak on the surface. Then rinse the nearby areas to clear any overspray.
Careful. Overspray left on nearby surfaces needs rinsing too, so don't skip that pass.
Step 6 of 6
Blot the sink dry
Blot the sink dry with a clean towel rather than dragging it across the surface. Check the spot in good light before you decide whether to repeat the steps.
If you'd rather buy than mix
Best products for mud on sinks
Choose a general-purpose cleaner labeled for your sink's material, and a soft abrasive cleaner only if the sink is enameled cast iron or vitreous china.
Amazon Basics Microfiber Cleaning Cloths
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on sinks, and its directions fit the steps above.
Finished the steps? How does it look?
Nice work. Let it dry completely and check it again in good light. Here is what done looks like:
How to tell it's really gone →A faint mark usually needs one more round, not a stronger product.
Heavy buildup usually takes more than one round.
Heavy or long-standing buildup →When to call a professional →How to tell it's working
When the mud is gone, the sink looks even in good light, with no gritty film or dull patch. If a gray shadow or film remains, the stain is still there, so repeat the wipe, rinse and blot steps.
What changes for yours
Adjust for your sinks
Vitreous china sink
Vitreous china is a glazed ceramic finish, so the soft sponge with mild soap and warm water is your main tool. Only reach for a general-purpose cleaner labeled for vitreous china when the sink is heavily soiled, and test it on a hidden spot first.
If a stubborn mark is still there after the steps, the soft abrasive treatment in the set-in section below is the next move, and it applies to this surface only.
Enameled cast iron sink
Enameled cast iron follows the same brush-off and cold-rinse steps, but the enamel can be scratched by anything with a steel edge. Keep the wipe-down to a soft sponge and a general-purpose cleaner labeled for enameled cast iron, and rinse right after.
For a mark that stays, a soft abrasive cleaner is allowed on this surface only, used sparingly and always with water.
Acrylic sink
Acrylic changes the cleaner choice more than anything else, so use only a general-purpose cleaner labeled for acrylic, and test it on a hidden spot first. The brush-off and cold-rinse steps stay the same.
If the acrylic is dull or scratched, cleaning won't bring it back, so contact the manufacturer for repair. If the acrylic is part of a bathtub rather than a sink, the Bathtubs guide covers it in more detail.
Faucet with PVD finish
A faucet with a PVD finish follows the same brush-off and cold-rinse steps, but the cleaner must suit that finish. Wipe the faucet base with a soft damp cloth and blot it dry, so no cleaner is left to dry around the spout.
Test any cleaner on a hidden part of the faucet first, and rinse it off right away so none dries on the finish.
Heavy or long-standing buildup
Old mud that has been sitting for a while bonds into the surface, so the first pass will only lift the top layer. Expect that, and don't press harder with the sponge.
Dried and old stains may need several rounds of treatment before they are fully gone. Repeat the wipe-down, rinse and blot steps each time, and on enameled cast iron or vitreous china only, add a soft abrasive cleaner sparingly with water for the last round.
If the mark is still there after several rounds, stop rather than scrub harder, because stronger effort risks dulling the finish. A faint mark can remain, and the finish matters more than the last trace.
Vinegar, baking soda, peroxide and more
Do home remedies work on mud on sinks?
Home remedies show up for every stain, but most of them belong to other stains or to fabric. Brushing, cold water, mild soap and a labeled general cleaner do the job, and each other remedy has a reason to skip it.
Skip5Avoid1
What makes it worse
Mistakes to avoid
Don't scrub mud while it's still wet
Wet mud smeared across the sink pushes the fine particles into the finish, and that makes the stain harder to lift later. Let it dry and brush it off instead, because the brushing step does most of the work.
Don't use abrasives or solvents on acrylic
Abrasive cleansers, solvents and aerosol cleaning products all damage acrylic, so keep them off the surface entirely. Stick to a mild general-purpose cleaner labeled for acrylic instead.
Don't use steel wool on cast iron
Steel wool, wire brushes, abrasive pads and solvents are all off-limits on enameled cast iron. A soft sponge does the job for the wipe-down.
Don't use ammonia or harsh grit on vitreous china
Ammonia cleaners can damage the finish, and strong abrasive cleaners scratch and dull it. Mild soap and warm water are the safe choice here.
Don't mix cleaners together
Never mix chlorine bleach with ammonia, vinegar or other removers, and if you need a second product, rinse thoroughly between them. Mixed products can give off hazardous fumes.
When to call a professional
If the finish is dull or scratched, or a mark survives several rounds, contact the manufacturer's customer service for repair. On enameled cast iron, improper care and cleaning can void the cast iron warranty, so check it before using stronger products.
Questions
Can I clean mud from my sink with vinegar?
No, vinegar isn't a good choice for a sink. Vinegar is unsafe on marble, limestone, travertine and cement grout, so check the surface before you consider it at all.
Can I clean a muddy sink with only water?
Yes, as a first pass. Let the mud dry, brush off the loose material, then rinse with cold water and wipe with a soft damp sponge. Add a cleaner only if the sink is still dirty.
Can I use bleach on a sink with mud?
The steps don't call for it, and it isn't a safe choice for every sink material. Check the material first, and if you're unsure, stick to the mild options above.
Can I use a soft abrasive cleaner on an acrylic sink?
No. Acrylic can't take abrasive cleansers, so clean it with the mild steps only. If the finish is dull or scratched, contact the manufacturer for repair.
Can I use rubbing alcohol on mud in the sink?
No. Mud comes off with brushing, a cold rinse and a mild cleaner, which is the safer route for a sink. Mud comes off with brushing, a cold rinse and a mild cleaner, which is the safer route for the sink surface.
Should I test a cleaner before using it?
Yes. Test any cleaner on an inconspicuous area first, then check that the finish looks the same before you clean the stain.
What if the mud has dried for days?
Expect several rounds rather than one. Repeat the wipe-down, rinse and blot steps, and if the mark is still there, stop and contact the manufacturer or a professional.
How do I clean black gunk out of a bathroom sink drain?
Brush or vacuum the loose gunk off first, then follow the same steps around the drain opening. Use a cleaner only on the spots that need it, and rinse it away right after.
Mud on other materials
Other stains on sinks
Start from the bigger picture
How we know this
Every method, amount and warning here comes from university extension services, industry bodies and product makers. We read them, check every step for unsafe combinations and changed amounts, and write it up so you can follow it.