Before calling the experts, you can try DIY ideas to unclog the drain if it is a minor blockage. Here are some solutions: Try a plunger – Keep the plunger firmly on the drain and create a seal before pulling and pushing the plunger. Mostly, it will clear minor blockages. Baking Soda and Vinegar – Pour a baking soda and vinegar mixture down the drain. Keep it for some time, then flush the drain with hot water. The mixture helps to melt away the blockage.