Now I keep three Hermann's tortoises.So I pay attention to the food of tortoises.In internet,a torotises keeper recommend Mazuri extremely.He said Mazuri was named compulsory for the food of tortoises in the zoos and multiplying farm of USA.So I want to make sure is it really?Dose the Unite states really have a law which rule that some zoos and moltiplying farm must use Mazuri to keep tortoises?Thank you very much!