It’s not a miracle cure for a totally blocked sink, but for 90% of “slow drains” and routine maintenance, it works just as well as expensive eco-friendly drain cleaners. It’s saved me multiple plumber call-outs. Just manage your expectations – if water isn’t draining at all , reach for a plunger or a snake first, not the bicarb.
Once your sink is unblocked, use this method once a month to prevent future build-ups. You don't need the vinegar for this—just the soda and hot water. unblocking sinks with bicarbonate of soda