I used about 150ml for a moderate blockage. You’ll get 3–4 treatments from one 500ml bottle. At £10, that’s roughly £2.50 per clear drain – cheaper than a plunger or a plumber.
Unlike many granular products that need dry pipes, the HG gel can be poured into up to 5cm of standing water. That’s a lifesaver when the sink is already full.
Safety First:
Eco-Impact: