To get stains out of a Travertine kitchen, follow these steps:

1. Blot up any excess spill or stain immediately with a clean, dry cloth.
2. Gently clean the affected area with a mixture of warm water and a pH-neutral cleaner suitable for natural stone.
3. Rinse the area thoroughly with clean water and dry with a clean towel or cloth.
4. If the stain persists, apply a poultice made of baking soda and water or commercial stone stain remover, as directed by the manufacturer.
5. Cover the poultice with plastic wrap and let it sit for several hours or overnight to draw out the stain.
6. Remove the poultice and rinse the area thoroughly with clean water.
7. Dry the surface with a clean towel or cloth.

Its important to avoid using acidic or abrasive cleaners, bleach, or ammonia on Travertine, as these can damage the stone.