A clogged drain can be frustrating, especially when water starts draining slowly or stops flowing altogether. While chemical drain cleaners are one option, they can be harsh on your pipes and may not solve stubborn blockages. A drain snake, also called a plumbing snake or drain auger, is a simple and effective tool for clearing many common clogs.
Learning how to use a drain snake properly can help you handle minor plumbing problems yourself and potentially save the cost of a service call. In this guide, we’ll explain what a drain snake is, how it works, and how to use one safely.
A drain snake is a flexible cable designed to travel through a drainpipe and break up or retrieve blockages. Basic manual models usually consist of a long metal cable attached to a handle or crank. When you push the cable into the drain and rotate it, the tip can grab, break apart, or move the material causing the clog.
Different types of drain snakes are available, including small hand-operated snakes for sinks and tubs and larger drum-style or motorized augers for more difficult blockages.
A drain snake is useful when a drain is:
For a minor sink or bathtub clog, a small manual drain snake is often sufficient. More serious blockages deeper in the plumbing system may require a larger auger or professional assistance.
Before starting, gather:
Wear gloves because the material you remove from a drain can be unpleasant and unsanitary.
If there is water sitting in the sink, tub, or shower, remove as much as possible with a bucket or container. Wipe up the remaining water with a towel.
This makes the job cleaner and gives you better access to the drain.
Depending on the type of drain, you may need to remove a stopper, strainer, or drain cover.
For a bathtub, the stopper may need to be unscrewed or lifted out. In some sinks, you can simply remove the stopper by hand.
Set the parts aside somewhere safe so you can reinstall them later.
Place the end of the snake into the drain opening. Slowly push the cable down into the pipe.
Avoid forcing it. If you encounter resistance, the cable may have reached the clog or a bend in the pipe.
Once the cable reaches the blockage, begin turning the handle clockwise while gently pushing the cable forward.
The rotating motion allows the end of the snake to work through the clog. Continue feeding the cable slowly as you rotate it.
If the snake seems stuck, don't force it aggressively. Pull it back slightly, rotate it again, and try moving it forward.
When the snake reaches the obstruction, you may feel additional resistance. Continue rotating the cable while applying gentle pressure.
Depending on the type of clog, the snake may:
If the snake catches something, slowly pull it back while continuing to rotate the handle.
Once you've worked through the blockage, slowly pull the cable out of the drain.
Keep a bucket or trash bag nearby because the end of the snake may contain hair, grease, food particles, or other debris.
Clean the snake thoroughly after use.
Run hot tap water through the drain for several minutes to help wash away remaining debris.
Don't immediately pour large amounts of boiling water into a drain unless you're sure your plumbing and fixtures can safely handle it. Very hot water can damage certain plastic components.
Watch the drain while the water runs. If it drains quickly without backing up, the clog was likely cleared successfully.
Once you're satisfied that the drain is flowing normally, reinstall the stopper, strainer, or drain cover.
Clean the surrounding area and dispose of the debris you removed.
A few simple techniques can make the process easier:
Don't rush the cable into the drain. Slowly feeding and rotating the snake gives you better control and reduces the chance of damaging the pipe.
If the snake won't move, forcing it can bend the cable or potentially damage plumbing. Retract it slightly and try rotating it again.
Drain snakes can collect bacteria and unpleasant debris. Wash and disinfect the tool after use, following the manufacturer's instructions.
Small hand snakes are designed for relatively minor household clogs. Large or deep blockages may require a longer or more powerful auger.
One of the biggest mistakes is using excessive force. A drain snake is designed to work through a clog gradually, not by being aggressively pushed into the pipe.
You should also avoid repeatedly using chemical drain cleaners before snaking a drain. If chemical residue is still present, it can splash onto your skin or eyes when you insert or remove the snake.
Never use a drain snake if you're unsure whether the blockage involves a damaged or collapsed pipe. In such cases, professional inspection may be necessary.
A drain snake can solve many household clogs, but it isn't the right solution for every plumbing problem.
Consider contacting a professional plumber if:
These symptoms can indicate a deeper problem in the plumbing system rather than a simple localized clog.
Using a drain snake is a straightforward way to tackle many common household drain clogs. By inserting the cable carefully, rotating it while applying gentle pressure, and removing the blockage gradually, you can often restore normal drainage without resorting to harsh chemicals.
The key is to work patiently and avoid excessive force. If the clog persists or you notice signs of a larger plumbing problem, it's best to stop and contact a qualified plumber.
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