If you are careful with dangerous chemicals and want the best value for money, buy it. If you have expensive plumbing, children, or a poor sense of balance, spend the extra £2 on a bottle with a child-safe cap and fume suppressant.
After 20 minutes, a kettle of boiling water was poured down. The result was a satisfying “glug-glug” as the water vanished immediately. The slow drain was cured in a single application. sainsbury drain unblocker
Following the instructions (pour slowly down a dry drain, wait 15-30 minutes, flush with hot water), the immediate reaction was concerning. Within 30 seconds, a plume of acrid, chlorine-like fumes rose from the plughole. While all caustic drain cleaners smell, the Sainsbury’s variant was notably aggressive. Verdict: Open a window and leave the room. If you are careful with dangerous chemicals and