system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How mopping cleans a floor rather than just redistribute filth.

I'm not saying it doesn't work, but like... how exactly?
gpt
Most of the dirt becomes attached to the mop. If you never washed out your mop, it would eventually become so saturated that it left as much dirt on the floor as it picked up. But if you rinse/squeeze your mop, or dip it in water, most of that dirt gets transferred to the water and ultimately goes down your drain. Mops can be pretty absorbent, so it might not seem like it needs to be rinsed out for quite some time. (Although more frequent rinsing may result in cleaner floors.)