I concur with the Panacur--we went through the chronic runny deposits and my vet told me that, despite negative fecals, it was likely there was some little nasties there, we did a bland (chicken and rice) diet for 5 days with a round of Panacur. I transitioned Mandy back to regular food and she's been fine since. I will add that Mandy is one that definitely needs extra fiber, and the fiber that does best for her is dried beet pulp. Every food I've given her with beet pulp has firmed things up. Every food I've trieid without it, even when I've added Metamucil (at the vet's direction) or pumpkin, resulted in soft or runny stools.