This Starwax drain cleaner is a gel containing caustic soda, formulated to clear blocked sinks, showers and baths. Its high-density formula stays in place even in stagnant water, letting it work directly on the blockage rather than washing away. The 1 litre bottle suits regular kitchen and bathroom maintenance.

• Gel formula with caustic soda at 30% concentration
• Effective even in standing water due to high density
• Suitable for sinks, showers and baths
• Pack size: 1 litre