4. Clean your shower and tub after your shower

Do not leave your shower or bathtub wet. Spend a couple of minutes and clean the room. Once you step out of the shower or tub dry yourself first and then use the same towel to wipe down the walls and the tub. It's easy to remove soap residue when it’s still wet. Scrubbing the dirt off when it’s dry will take you much more time later on anyways.