5. Using Old Sponges and Cloths
If your sponge, scrub brush, or cloth has seen better days, your bathroom probably has too. One of the easiest mistakes to make is cleaning with tools that are already dirty, damp, or overloaded with old product residue. It feels harmless because technically, you are still cleaning, right? But a tired sponge or a grimy cloth can do the exact opposite of what you want. Instead of lifting dirt away, it can smear residue around, spread unpleasant smells, and leave surfaces looking dull, no matter how much effort you put in.