How to Unclog a Shower Drain (5 Methods That Work)

Frequently Asked Questions

What causes a shower drain to clog?

Hair is the cause of 95% of shower drain clogs. Hair combines with soap residue, conditioner, and skin cells to form a sticky mass that catches more hair over time. The clog is almost always within the first 12 inches of the drain, not deep in the pipe — which is why a zip-it tool or needle-nose pliers works so reliably.

Does baking soda and vinegar actually unclog a drain?

Rarely. The fizzing reaction between baking soda (base) and vinegar (acid) is mostly theater — the neutralization reaction produces CO2 and water, which has very little mechanical force to break apart a hair clog. It may help with very minor soap buildup but won't clear a real hair mass. The boiling water method is more effective. For an actual clog, use a zip-it tool.

How do you remove hair from a shower drain without chemicals?

Use a Zip-It drain cleaning tool (a thin plastic strip with barbs). Remove the drain cover, insert the zip-it, twist it, and pull slowly — the barbs grab the hair mass. One $5 zip-it removes what chemical drain cleaners can't. A bent wire hanger works as a free alternative.

Is it safe to use Drano in a shower drain?

Drano is generally safe for shower drains with metal pipes. Do not use it with PVC pipes if the water is standing deep and hot (the chemical reaction generates heat). Do not use Drano in a drain you have already poured another chemical cleaner into — mixing drain cleaners can produce dangerous fumes. And Drano rarely fully clears hair clogs — it may partially dissolve the outside of the mass while leaving the core intact.

How do I stop my shower drain from clogging?

Install a hair catcher on or just inside the drain. The TubShroom (sits inside the drain) and various mesh drain covers catch hair before it gets past the drain opening. Clean the hair catcher after every shower — 10 seconds of work that eliminates most shower drain clogs entirely.

When should I call a plumber for a shower drain?

Call a plumber if: the drain is completely blocked and no DIY method clears it, multiple drains in the home are slow simultaneously (main line issue), you hear gurgling in other drains when the shower runs (venting problem or main line blockage), or there's sewage smell with no clog visible.

Unclogging a shower drain: (1) Use a zip-it tool or plastic drain snake ($5–$8) — insert, twist, and pull out the hair clog. This clears 90% of shower drain clogs in under 2 minutes.

Shower drain clogs are almost always hair — and almost always within 6 inches of the drain opening. That’s good news: the fix is usually a $5 tool and 5 minutes, not a plumber visit.

What You Need

Method	Tool	Cost
Zip-It / hair claw	Zip-It drain tool	$5
Boiling water	Kettle	Free
Plunger	Cup plunger	$8-12
Baking soda + vinegar	Pantry items	Free
Drain snake	25-ft hand auger	$20-30

Amazon picks:

• Zip-It Drain Cleaning Tool (3-pack) — best first move for hair clogs
• TubShroom Ultra Hair Catcher — sits inside drain, catches every hair
• Mesh drain cover hair catcher — flat, universal fit
• Ridgid 25-ft drain snake — for clogs a zip-it can’t reach
• Green Gobbler Drain Clog Dissolver — enzyme-based, safer than Drano for regular maintenance
• Cobra Products drain auger — manual hand auger for stubborn clogs

Step 1: Remove the Drain Cover

Unscrew or pop off the drain cover (most shower drains have a screw in the center, or a snap-off cover). Set it aside and look into the drain with a flashlight. In most cases you’ll see the hair mass within the first few inches.

Method 1: Zip-It Tool (Best for Hair Clogs)

The zip-it is a thin plastic strip with barbs. It’s the most effective tool for shower drain hair clogs.

1. Insert the zip-it into the drain
2. Rotate it slowly as you push it down — the barbs catch hair
3. Pull it out slowly and steadily
4. Remove the hair mass from the tool (rubber gloves help)
5. Repeat 2-3 times until the tool comes up clean

Run hot water to verify the drain flows freely. Done.

No zip-it? A bent wire coat hanger works — make a small hook at one end and fish it around the inside of the drain. Needle-nose pliers can also grab a visible hair mass.

Method 2: Boiling Water (For Soap Buildup)

If the zip-it didn’t find a hair mass and the drain is slow rather than blocked, soap and conditioner buildup may be coating the pipe walls.

1. Boil a full kettle of water
2. Pour it slowly into the drain in two or three stages, 30 seconds apart (this gives the hot water time to dissolve soap buildup)
3. Follow with hot tap water for a minute

Do NOT use boiling water with PVC pipes — it can soften joints. For PVC, use the hottest tap water you have.

Method 3: Plunger

Works best when the drain is partially blocked and water is standing.

1. Remove the drain cover
2. Coat the rim of the cup plunger with petroleum jelly for a better seal
3. Place the plunger over the drain opening, ensuring a complete seal
4. Plunge vigorously 10-12 times
5. Pull the plunger off sharply on the last stroke to create suction
6. Run water to check flow

A plunger works best on blockages that are lower in the drain than a zip-it can reach.

Method 4: Baking Soda + Vinegar (Mild Maintenance)

This combination won’t clear a real clog but can help with slow drains caused by light buildup.

1. Pour 1 cup baking soda down the drain
2. Follow with 1 cup white vinegar
3. Cover the drain immediately with the drain cover or a wet rag (to force the reaction downward instead of out)
4. Wait 30 minutes
5. Flush with boiling or very hot water

The fizzing creates minimal mechanical force, but the alkaline baking soda can help neutralize acidic soap residue.

Method 5: Drain Snake / Hand Auger

For clogs deeper than 12 inches that a zip-it can’t reach.

1. Insert the snake cable into the drain
2. Feed the cable until you hit resistance
3. Rotate the handle to work the snake into the clog
4. Push through or rotate to grab the clog, then pull back
5. Run water to flush any loosened debris

A 25-foot hand auger handles most residential shower drain issues. Electric augers are overkill for shower drains — save those for main line issues.

If Nothing Works: Check the P-Trap

If the drain is completely blocked and no method clears it, the clog may be in the P-trap (the curved section of pipe under the shower). For a shower, the P-trap is typically accessible from below (basement or crawl space) or through an access panel in the adjacent wall.

This level of repair typically warrants a plumber. See Drain Cleaning Cost for what to expect to pay.

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The Real Fix: Hair Catchers

The best drain unclogger is the one you never need because you prevented the clog.

TubShroom (sits inside the drain): Catches hair as it drains — nothing gets past it. Pull it out, wipe the hair off, done. Works on most standard 1.5-inch tub and shower drains.

Mesh drain cover: Sits flat over the opening. Catches hair on top where it’s visible and easy to remove. Universal fit, $8-12.

Clean whichever you use after every shower. The habit takes 10 seconds and eliminates 99% of shower drain clogs.

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When to Call a Plumber

• Drain completely blocked and zip-it + snake + plunger all failed
• Multiple drains slow simultaneously (main line issue, not shower drain)
• Gurgling sounds in toilet or other drains when shower runs (venting problem)
• Sewage odor (sign of a bigger plumbing issue)
• Water backing up through other fixtures

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Related Reading

• How to Unclog a Drain Without Chemicals — methods for sink and tub drains
• How to Fix Low Water Pressure — if the slow shower is a pressure issue, not a drain
• How to Clean a Shower — keep the shower clean so buildup doesn’t reach the drain
• Drain Cleaning Cost — what a plumber charges when DIY doesn’t work
• How to Replace a Shower Head — upgrade while you’re in there