Here are some steps you can follow to clean your cowboy boots:

1. Remove loose dirt with a soft brush or cloth.
2. Use a mild soap or detergent, or a natural solution like vinegar or lemon juice, to wipe down the boots with a damp cloth or brush.
3. For leather boots, a leather cleaner or saddle soap and a horsehair brush can be used to scrub and polish the boots.
4. Let them air dry.

I hope that helps! Let me know if you have any other questions.