Given travertine’s acid sensitivity, always avoid applying vinegars or other citrus cleaners.
Focus particular attention on any surface holes in the travertine when cleaning, as they can collect soap scum. A diamond-shaped brush makes it easy to clean your shower’s innermost corners easily, but any shape is fine.
Many grout formulas contain acids and should not be used with travertine. If possible, use a toothbrush with softer bristles, as hard-bristled toothbrushes may etch the surface of the stone.
Pay special attention to pools of water in corners and around edges. If you have a glass shower door, leave it open after showering to allow the water to dry.
If you have a detachable shower head, use it to rinse the tile with warm water after showering to remove soap scum. Creating a calendar reminder can help you remember to incorporate cleaning your shower into your household routine.