How to Use a Plumbing Snake? | Clear Stubborn Drain Clogs

For the full breakdown, see our best Drain Snake for Bathroom Sink guide.

When a plunger won’t do the job, a plumbing snake (also called a hand auger or drain snake) is the next step. It works by feeding a flexible steel cable into the drain pipe, rotating it against the clog until it breaks up or hooks onto the debris. You can clear most sink, tub, and shower clogs yourself in about 15 to 30 minutes without calling a plumber.

Preparing The Drain Before You Start

Start by removing the drain stopper or cover so the cable can enter the pipe freely. For bathroom sinks, this usually means unscrewing the stopper mechanism or lifting it out. If the clog is stubborn and you have access, removing the P-trap gives your snake a direct path to the wall drain line.

• Keep a bucket, rag, and old towels nearby—expect some splashback and dirty water.
• Wear clothes you don’t mind getting dirty.
• For tubs, you may need to remove the overflow plate to reach the drain opening.

Feeding The Cable And Clearing The Clog

Insert the cable tip into the drain opening and begin feeding it in slowly. Advance it in short 6 to 12 inch increments, locking the collar between advances to keep tension.

When you feel resistance, you’ve reached the clog. Rotate the drum clockwise to work the cutting or boring head through the stoppage—let the head do the work. Don’t force the cable; pushing too hard can kink the cable or damage the pipe. If the cable binds or loops back on itself, pull back a few inches and adjust the angle before trying again.

Once the clog breaks up or the snake hooks onto debris, slowly retract the cable, cleaning it with a rag as it comes out. Flush the drain with hot water to confirm flow and wash away any loosened material, then dry the cable and drum to prevent rust and bacteria buildup.

Manual Vs. Power Drain Augers

Manual snakes (hand crank drums) suit most household clogs in sinks and tubs.

If your toilet drain is the problem, you can access it directly through the base of the bowl. For persistent slow drainage after snaking, a deeper clog further down the line may remain, and repeated passes—or a longer cable—may be needed.

Tool Types At A Glance

| Tool | Best For | Notes |
|—|—|—|
| Manual drain snake (hand auger) | Sink, tub, shower clogs | Crank-fed cable, full control, no power needed |
| Power drum auger | Tough clogs, longer runs | 0.25 in x 25 ft, drill under 300 RPM |
| Hybrid drain auger | Versatile household use | 18-volt, cordless convenience |

FAQs

How far should I push the snake into the drain?

Advance the cable in 6 to 12 inch increments until you hit resistance—that’s the clog. Pushing beyond the blockage without rotating can cause the cable to kink or loop. If you’ve fed out most of the cable with no resistance, the clog may be further down the line than your snake can reach.

Can a plumbing snake damage my pipes?

Yes, if you force the cable. Excessive pressure can kink the cable itself or damage pipe joints and finishes. Rotate the auger tip against the clog and let the cutting head do the work. If the cable binds, pull back slightly and change your angle rather than pushing harder.

What should I do after snaking the drain?

Run hot water through the line for a few minutes to flush out loosened debris and confirm drainage is back to normal. Then clean the snake cable with a rag, dry the drum thoroughly, and store it—leaving it wet invites rust and bacteria buildup for next time.