Here are some tips for using stained wood around horses:
* Use stains that are specifically designed for use around animals.
* Make sure that the stain is completely dry and cured before allowing the horses to come into contact with it.
* Avoid using stains that contain volatile organic compounds (VOCs).
* If you are concerned about the safety of a particular stain, consult with a veterinarian before using it.
By following these tips, you can help to keep your horses safe from the harmful effects of stained wood.