1. Install a small suction nozzle for the vacuum cleaner to suck the dust from the gap in the floor.

2. Dip the cotton mop into the floor cleaner and wipe the floor gap.

3. You can also use a cold air blower to blow out the dust in the cracks in the floor, and then wipe it with detergent and water.

4. After soaking in water, wring the towel until it doesn't come out, put it on the floor seam and heat it with an electric iron to clean the floor seam.

5. Floor cracks need to be cleaned and maintained frequently to keep them in a clean state for a long time.