WARNINGS - SAND FLUSH IS FOR USE IN HORSES ONLY. KEEP OUT OF REACH OF CHILDREN AND OTHER ANIMALS. DO NOT FEED TO HORSES DISPLAYING SIGNS OF COLIC. SEEK VETERINARY ADVICE IF YOUR HORSE DISPLAYS SIGNS OF COLIC OR IN THE EVENT OF ACCIDENTAL OVERDOSE. EACH INDIVIDUAL HORSE IS DIFFERENT AND VETERINARY ADVICE IS RECOMMENDED PRIOR TO USING THIS PRODUCT.
Answering Yes to any of those questions could mean you have a sand problem.