system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does mopping clean the floor, if the soapy water just stays on the ground?
gpt
you will typically mop in back and forth passes. The mop will get the floor wet which will help dissolve dirt on the floor. A second pass will catch the dirt. You repeat multiple times until the floor looks clean. You then put the mop in the bucket to get fresh water and release the trapped dirt. You do not necessarily use soapy water. That can leave a residue. Other cleaners that evaporate however can be used.