One drain or several?
If only the bathroom sink is slow, the clog is in that fixture's drain — usually hair and soap. If the tub gurgles when the toilet flushes, or the lowest drain backs up when the washer drains, it's the main line.
Common causes of repeat clogs
- Kitchen grease that coats the pipe and narrows it a little more each time
- Tree roots entering clay or cast iron joints
- A belly (sagging section) where water and solids sit
- "Flushable" wipes, which don't break down like paper
- A cable that punched a hole but left most of the clog
When to get a camera inspection
If a main line has needed clearing twice in a year, a camera inspection shows if the cause is buildup (fixable with jetting) or a pipe defect (needs repair). Without it, you're paying to clear the same clog again.
When a recurring clog means a bigger problem
If more than one fixture backs up, or a toilet gurgles when the washing machine drains, the blockage is in a shared line rather than a single trap. That is where a camera inspection pays for itself: it shows whether the cause is grease buildup, roots, a sagging section (belly) or a broken pipe.
What professional cleaning involves
A plumber clears most household clogs with a cable (snake) sized to the pipe. Lines that clog every few months from grease or scale are better served by hydro jetting, which scours the pipe wall instead of punching a hole through the blockage.
Why Does My Drain Keep Clogging: when to call a pro
- Several drains are slow at once
- Water comes up in a different fixture
- You've used chemical cleaners — tell the plumber before they open the line
Why Does My Drain Keep Clogging: common questions
How often should drains be professionally cleaned?
Only when they need it. Most homes never need scheduled cleaning. Homes with recurring kitchen-line grease or root intrusion sometimes benefit from maintenance cleaning every one to two years.
Do enzyme drain cleaners work?
They can slowly break down organic buildup and are safe for pipes, but they won't clear a hard clog, roots or a broken line.
Why does my drain clog again right after it's cleared?
The blockage was only partly removed, or something in the pipe, such as roots, a sag or buildup on the walls, keeps catching debris. A camera inspection shows which.
Are enzyme drain cleaners safe?
Enzyme cleaners are gentler than caustic chemicals and can help with slow buildup, but they won't clear a solid clog or fix a pipe problem.
Every home differs; editorial standards.