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How to Unblock a Drain with Caustic Soda

by Aydin merih Ozyer 25 May 2026

Blocked drains are one of the most common household problems in the UK. Grease, food waste, soap buildup, and hair can slowly clog pipes and reduce water flow.

Caustic soda, also known as sodium hydroxide, is a powerful drain cleaning solution that helps dissolve grease, organic buildup, and stubborn blockages quickly.

How to use caustic soda safely:

1. Wear protective gloves and eye protection.
2. Carefully pour the recommended amount into the blocked drain.
3. Slowly add cold water.
4. Leave it to work for 15–30 minutes.
5. Flush thoroughly with hot water.

Important safety advice:

- Keep away from children and pets.
- Avoid direct skin contact.
- Never mix with bleach or other chemicals.
- Always store in a dry and secure place.

MUSON Caustic Soda is designed for powerful drain cleaning performance and fast action against heavy grease and pipe blockages.

Looking for a Powerful Drain Cleaner?

MUSON Caustic Soda 1KG is designed for fast drain unblocking, grease removal, and powerful pipe cleaning.

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MUSON caustic soda drain cleaner 1KG fast acting drain unblocker

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