While it won’t dissolve a solid metal hairpin or a lost earring, bicarbonate of soda is remarkably effective against the most common cause of sink blockages: . This includes grease, soap scum, food particles, and hair.
Pour ½ cup of dry bicarbonate of soda directly into the drain. Try to get it past the drain strainer and into the pipe. sink unblocker bicarbonate soda
Pour a full kettle of boiling water directly down the drain. This softens any greasy or waxy buildup, making it easier for the next step to work. While it won’t dissolve a solid metal hairpin
Quickly cover the drain opening with a plug or a damp cloth. This traps the carbon dioxide gas inside the pipe, forcing it to push against the blockage rather than escaping upwards. Leave it for 15–30 minutes . Try to get it past the drain strainer and into the pipe
Immediately pour 1 cup of white vinegar down the drain. You will hear a vigorous fizzing sound—this is good.