The answer to 'toilet maintenance' is to perform regular cleaning and inspection to keep your toilet functioning properly. This includes cleaning the bowl, tank, and exterior surfaces on a weekly or bi-weekly basis, as well as checking for any leaks, clogs, or other issues that may arise.
When performing toilet maintenance, be sure to use a toilet brush and toilet cleaner to scrub the inside of the bowl. You should also wipe down the tank, lid, and base of the toilet with a disinfectant cleaner. Additionally, check the tank and bowl for any cracks or damage, and inspect the flapper, fill valve, and other components to ensure they are working correctly.