Powerful Caustic Soda Drain Cleaner(750g) - 375g x 2 Bottles | Effective Clog Remover, Industrial Strength Formula, Fast Action

This stuff was amazing for clearing the drain outside my kitchen window. Sturdy bottles, and effective with one use. The smell is strong though so keep animals and children away. Great value for money.

This is the only product I’ve found that has cleared my outside drain, and it worked in minutes.Great stuff!

Very effective

Disappointed this product didn’t clear well the grease.

I was disapointed when I opend one to find christals. Some on the website have had disapointing revews. Theses are very good and do watch your hands. Dosn't need too much but pour boiling water over them and they burst into life. Would recomend.

My bathroom basin was barely draining. I took off the plug mechanism, poured down some caustic soda and added hot water from the kettle. It bubbles and gurgles. Repeated three times to use the whole bottle. Basin drains perfectly now. I’ve bought more to give the basin a regular clean out. Keep the room ventilated when using the product, and be prepared to wipe down where the steam condenses against anything. It gets hot as it mixes with water, so be careful not to get splashed by it. Gloves and a face mask would not be overkill. But for clearing bathroom gunk… five stars.

Perfect for any blocked drain

I had to use both bottles but it worked!