WOW! I just went to the site and read it too. Now I am worride too! We are in a drought and my pasture is pretty much dirt now plus in the winter I usually keep my horses in the outdoor areana and never really gave it a thought about the sand out there. Hmm? Now I'm thinking about getting some of the Assure™ or Assure Plus™, and giving it to my horses just to be safe.
Cathy C