It is advisable to maintain drains regularly, even before they become clogged. The basics include trapping hair and food scraps, not pouring grease down the sink, regularly cleaning strainers and siphons, and using a product designed for preventative maintenance as per instructions. For regularly used drains, checking and maintaining them once every 14 days can be a practical guideline. However, the specific frequency and dosage of a cleaner are always determined by its manufacturer.
Regular care helps remove accumulating deposits, reduce unpleasant odors, and decrease the likelihood of water completely stopping draining one day.
Updated: August 2026
Important: Never mix drain cleaners with each other or with chlorine, acidic, or other cleaning agents. They can react, heat up rapidly, or release dangerous gases. Always follow the label of the specific product.
Why does a drain start to smell or drain slowly?
Substances that water alone cannot flush away gradually accumulate in pipes. In the kitchen sink, this mainly includes grease, oil, food scraps, and coffee grounds. In the bathroom, hair, soap, and cosmetic products most commonly accumulate.
Deposits gradually narrow the pipe's passage. Furthermore, other impurities can accumulate on their surface and decompose, which results in an odor. Therefore, slower draining is not just a minor inconvenience but often the first warning sign of an emerging problem.
However, odor may not always be caused by a dirty pipe. The cause can also be a dried-out siphon, a leak, poor sewage ventilation, or a defect that a regular cleaner cannot resolve.
How often should you preventively clean drains?
There is no single mandatory interval for all households and all products. Maintenance needs depend on drain usage, type of impurities, pipe construction, and the product used.
The following plan can be used as a simple home routine:
- ongoing: remove impurities from the strainer and do not let them drain into the pipes,
- once a week: clean the strainer, stopper, and the area around the drain with a regular cleaning product,
- approximately once every 14 days: check the drainage speed and use a product designed for preventative maintenance according to the label,
- as needed: mechanically clean the accessible siphon,
- for recurring problems: have the pipes inspected by a plumber.
A strong corrosive product designed to clear a complete blockage may not be suitable for regular use. For a fortnightly routine, choose only a product whose manufacturer explicitly states preventative use.
How to clean a drain preventively step-by-step
1. Remove visible impurities
Remove the strainer and clear any hair, food scraps, and other trapped impurities. Dispose of them in mixed or organic waste according to their type; do not flush them back into the pipe.
2. Check how quickly the water drains
Turn on a small stream of water. If the water level rises or drains significantly slower than usual, a deposit is likely already forming in the pipe.
3. Choose the product according to its purpose
Distinguish between products for regular maintenance and strong products designed to clear blockages. Also, check if the product is suitable for the specific type of piping, garbage disposal, or septic system.
4. Read the entire instructions
Adhere to the recommended dose, contact time, and subsequent flushing method. A larger amount of product may not yield better results and can increase the risk of splashing or an undesirable reaction.
5. Use protective equipment
For chemical cleaners, wear suitable gloves. If splashing is a risk, also use safety goggles. Pour the product slowly and as close to the drain as possible. Ventilate the room.
6. Flush the drain according to the label
