Clean travertine ?

This link gives you the information you need:

https://ohsospotless.com/how-to-clean-travertine-floors/

Hope this helps, you did not say if the travertine is tile or stone:

https://www.wikihow.com/Clean-Travertine-Floors

after cleaning, a sealer specific for travertine can be applied

https://sefastone.com/blogs/s/travertine-sealers

found a couple things for you to try

https://ohsospotless.com/how-to-clean-travertine-floors/

https://www.builddirect.com/learning-center/flooring/how-to-seal-travertine-tile/

Cleaning Travertine Do’s & Don’ts | How To Clean Travertine

https://www.pfokus.com/blog/cleaning-travertine-dos-donts/

Hello. Here’s a link that could be helpful

https://www.builddirect.com/learning-center/flooring/travertine-cleaning-maintenance/

Instructions

1. Sweep or Vacuum the Floor. Sweep or vacuum the floor to eliminate small particles of dirt and grit.
2. Mop the Floor. Apply a small amount of plain warm water to the floor with a sponge or mop that is nearly wrung dry so that the travertine surface gets just barely damp. ...
3. Disinfect the Floor. ...
4. Clean the Grout Lines

Never use general floor cleaners or vinegar: Avoid using general floor cleaners or ‘green’ alternatives such as vinegar. The acidic nature of these products can eat away at the surface of travertine stone and dull the finish over time.

Maybe this will help

https://www.thespruce.com/cleaning-travertine-flooring-1314838

Hi! Hope this helps!

https://www.zeroreztampabay.com/dos-and-donts-guide-to-travertine-cleaning