Drain Auger (Sewer Snake): How to Use It, Types, and When to Call a Pro

A drain auger (also called a sewer snake) can clear many clogs in sinks, toilets, and even main sewer lines—but using the wrong type or technique can damage pipes or make the problem worse.

If you’re dealing with a clogged drain, a drain auger is often the next step after a plunger. It can reach deeper into pipes and break up or pull out blockages—but it’s important to know when it will help and when it won’t.

Quick Answer

A drain auger is a flexible cable tool used to break up or retrieve clogs inside pipes. Hand augers work for sinks and toilets, while motorized augers can clear deeper blockages in main sewer lines. Severe clogs, roots, or pipe damage usually require professional equipment.

What Is a Drain Auger?

A drain auger—often called a plumbing snake or sewer auger—is a long, flexible metal cable with a cutting or grabbing head on the end. As you feed it into a drain pipe, it either breaks apart the clog or pulls it back out.

• It reaches clogs that are too deep for a plunger to be effective
• Works inside the pipe, not just at the drain opening
• Available in manual and powered versions

Types of Drain Augers

Hand Auger (Small Drain Snake)

• Best for sinks, tubs, and minor clogs
• Typically 15 to 25 feet long
• Manual crank operation

  

  

Toilet Auger (Closet Auger)

• Designed specifically for toilets
• Protective sleeve prevents scratching the bowl
• Short, rigid cable

  

  

Drum Auger

• Stores cable inside a drum
• Longer reach for branch drains
• Manual or powered versions

Motorized Sewer Auger

• Heavy-duty machine for main drain lines
• 50 to 100+ feet of cable
• Often rented or used by professionals

  

  

When to Use a Drain Auger

A drain auger works best when the clog is inside the pipe and reachable. Use it when:

• One sink, tub, or toilet is clogged
• A plunger does not clear the blockage
• Water drains slowly but is not completely blocked
• You suspect debris buildup or a soft blockage in a drain

If multiple fixtures are affected, you may be dealing with a main line issue instead. Start here: Clogged Drain vs Sewer Line Clog

When NOT to Use One

A drain auger is not always the right solution. Don’t use one when:

• Multiple drains are backing up (this is likely a main sewer line problem)
• You suspect tree roots or the possibility of a pipe collapse
• The clog keeps returning
• You cannot locate or access the blockage

In these cases, see Sewer Line Blockages or consider a Sewer Camera Inspection.

How to Use a Drain Auger

Before you start, put on heavy-duty gloves and wear clothes you don’t mind getting dirty. Safety glasses are a good idea—especially when using a powered auger—because debris or wastewater can splash back. Keep an old rag or paper towels handy to wipe the cable as you pull it out, and lay down a tarp or plastic sheeting to protect floors. Work slowly and keep a firm grip on the cable to avoid kinks or sudden whipping.

1. Insert the cable

Feed the auger into the drain opening or cleanout until you feel resistance.

2. Rotate the cable

Turn the handle (or run the motor) to turn any corners in the pipe and engage the clog.

3. Work through the blockage

Push and pull gently through the pipe to advance the auger and break up or hook debris.

4. Remove the cable

Rewind and pull the cable out slowly, cleaning it with an old rag as you go.

5. Test the drain

Run water to confirm the clog is cleared.

Caution: Do not force the cable. Forcing it can kink the cable or damage pipes.

DIY vs Rental vs Hiring a Pro

For comparison, see Hydro Jetting vs. Snaking.

Risks and Mistakes

Using a drain auger incorrectly can damage pipes or create a bigger problem.

• Kinking or breaking the cable
• Scratching or cracking fixtures
• Damaging older or fragile pipes
• Injury from spinning cable

Motorized augers can be especially dangerous if misused.

When to Call a Plumber

Some situations require professional equipment or experience to avoid further damage. Call a pro if:

• Multiple fixtures are affected
• The clog returns quickly
• You suspect roots or pipe damage
• Sewage backs up into the home

Professionals may use larger augers, hydro jetting, or camera inspection to diagnose and fix the problem.

How to Hire a Plumber

If the repair turns out to be more complicated than expected, you can always find a qualified plumber near you.

For hiring advice, see Trade Secrets for Hiring the Right Plumber.

FAQs

What is the difference between a drain snake and an auger?

They are often the same tool. “Snake” is a general term, while “auger” usually refers to heavier-duty versions.

Can a drain auger damage pipes?

Yes, especially if forced or used incorrectly in older pipes.

Will an auger remove tree roots?

It may cut small roots, but larger root problems usually require professional equipment.

Is it better to rent or hire a plumber?

For simple clogs, renting can work. For main line problems, hiring a professional is usually safer and more effective.

NEXT SEE:

• Clogged Drain vs Sewer Line Clog
• Main Drain Clog Symptoms
• Sewer Line Blockages
• Hydro Jetting vs. Snaking