Generally, the floor drain will be blocked after a period of use. What if the floor drain is blocked? First of all, we can go to the supermarket to buy a "pipe pass" to clean up the blockage of such pipes. It is necessary to pour the right amount according to the degree of blockage, and pay attention to the instructions before buying, because some kinds of pipes are usually aimed at metal pipes, and plastic ones cannot be used. You can also buy some caustic soda in the market, put it in the sewer and pour some hot water. When caustic soda meets hot water, chemical changes occur when caustic soda meets hot water, the temperature rises rapidly, and the grease in the pipeline melts and is discharged with water, thus solving the problem of sewer blockage. You can also pour half a cup of boiled baking soda into the sewer first, and then half a cup of vinegar. After the soda reacts with the acid in the vinegar, you can remove the grease stuck in the pipe.