Clogged sink: how to unclog it without chemicals

Plunger, trap, snake: in that order.

The answer in 2 lines. A clogged kitchen or bathroom sink is almost always blocked near the drain opening or in the P-trap, the U-shaped pipe under the sink: grease and food scraps in the kitchen, hair and soap in the bathroom. Start with a plunger, then take off and clean the trap, and only then use a drain snake. Skip harsh chemical drain cleaners: they can burn skin and eyes, and they often don't clear the clog anyway.

The first 3 steps

Stop running water: there's no point filling the sink further.
Check the other drains: if only this sink is slow, the clog is close by; if the tub, shower or other sinks are slow or gurgle too, it's further down the line.
Pull out what you can see: strainer or stopper, hair, food scraps. Wear gloves.

Stop: danger

A chemical drain cleaner was already poured in: don't plunge and don't open the trap. The water can splash and burn skin or eyes. Air out the room, wait, and tell the plumber which product you used. Drain cleaners in the eyes or swallowed: rinse with water and call Poison Control at 1-800-222-1222, or 911 for serious symptoms (MedlinePlus: drain cleaner poisoning).
Never mix a drain cleaner with bleach, ammonia or another cleaner: some mixtures release toxic gases (Washington State Department of Health).

From simplest to most involved

1. Plunger: use a flat-bottomed cup plunger (the sink kind, not the toilet flange plunger). Leave a few inches of water in the sink, plug the overflow hole with a wet cloth (and the other side of a double kitchen sink), then pump firmly 10 to 15 times. Good for clogs near the drain.
2. P-trap: bucket underneath, unscrew the slip nuts by hand, empty and clean the trap. Good for hair, grease, or a ring or small object that fell in.
3. Drain snake (hand auger): a flexible cable you feed into the pipe, trap removed, while turning the handle. Good for a clog further in the wall pipe. A cheap plastic barbed strip (often sold as a hair-clog tool) works well on bathroom sinks.
4. Licensed plumber: clog that won't budge, several drains affected, or water backing up elsewhere.

Choosing tools: a basic cup plunger and a 1/4-inch hand auger, 15 to 25 feet long, cover most sink clogs and are sold at any hardware store. AAA's club magazine has a short guide to these chemical-free methods.

Cleaning the P-trap, step by step

Put a bucket under the trap (the U-shaped bend under the sink) and keep a rag handy.
Loosen the two slip nuts by hand, or with slip-joint pliers wrapped in a cloth if they're tight.
Empty the trap into the bucket, pull out hair and gunk, and scrub it with hot water and an old brush.
Check the washers: a flattened or cracked one gets replaced with the same size (take it to the store).
Screw it back hand-tight, run water and check for drips.

Video walkthrough: Ron Hazelton, clearing a clogged sink by cleaning the P-trap.

What not to do

Pouring boiling water into a clogged sink: it can damage PVC pipes and seals, and it can crack a porcelain sink. Hot tap water is enough.
Forcing a wire hanger down the drain: it scratches the finish and can push the clog deeper.
Stacking several different drain cleaners "just to be sure".

Home remedies: what to expect

Baking soda, then white vinegar, then hot water: the fizz can help with light buildup or as upkeep. On a real clog, it doesn't replace the plunger or a clean trap.
Hot water and dish soap: useful when grease has set in a kitchen drain.
Enzyme drain cleaners: slow, better for upkeep than emergencies. Read the label.

Good to know

Cooking oil and grease don't go down the sink, even with hot water: they harden in pipes and sewers. Let them cool, pour them into a can or jar with a lid and put it in the trash, or use your city's grease collection if it has one (Texas Commission on Environmental Quality: fats, oils and grease at home).
Garbage disposals don't make grease, coffee grounds, eggshells or fibrous peels safe for the drain.

Preventing the next one

A mesh strainer in the kitchen sink and a hair catcher in the bathroom sink and shower.
Wipe greasy pans and plates with a paper towel before washing them.
Clean the trap from time to time, before it clogs.

Who pays?

Renters: it depends on your state, your city and your lease. Many landlords handle clogs that come from the plumbing itself, and may bill you if the clog came from misuse (grease, a dropped object). Tell your landlord or building manager in writing if the problem keeps coming back. See our guide on repairs between tenant and landlord.
Apartment or condo building: water backing up into several units points to a shared drain line: tell building management right away.

In Austin, Jen's bathroom sink drains slower every day. She puts a bucket under the sink, unscrews the trap by hand and pulls out a clump of hair and soap. After a hot-water rinse, the water drains in seconds. She adds a $5 hair catcher to the drain.

A made-up story, for illustration.

The numbers (latest published)

No national statistics on clogged household drains were found as of November 1, 2026.
Poisonings: America's Poison Centers publishes national figures every year; the latest available are for 2024 (National poison center statistics, 2024). Household cleaning products are among the substances most often involved in young children's exposures. Keep drain cleaners up high, in their original containers. The 2025 figures haven't been published yet.

Bobby

Sources, verification, confidence

Verified on November 1, 2026, for the United States. Confidence: high for safety advice (MedlinePlus, Poison Control, Washington State Department of Health) and grease disposal (TCEQ); medium for home remedies, whose effect depends on the clog, and for who pays in a rental, which depends on your state and lease. This guide describes common cases, not a diagnosis or legal advice.