Mopping with alcohol and water is harmful to cats. Alcohol has a pungent smell, and cats have a more sensitive sense of smell than humans, so they are more likely to feel uncomfortable in this situation, which may even affect their respiratory health.

Furthermore, if a cat has a habit of licking the floor, it may accidentally ingest alcohol, which can affect its central nervous system, leading to difficulty in movement, dizziness, coma, and other physical reactions.