The answer to 'bathtub maintenance' is to regularly clean and inspect your bathtub to keep it in good condition. This includes scrubbing the tub with a mild abrasive cleaner to remove soap scum and hard water buildup, checking for cracks or damage, and ensuring the drain is clear and functioning properly.
It's recommended to clean the bathtub at least once a month, and more frequently if you have hard water or use the tub heavily. You should also inspect the tub every few months for any signs of wear or damage. If you notice issues like chipped enamel, leaks, or a slow-draining tub, it's best to call a professional plumber to assess and repair the problem.