Will Falconer, DVM Moderator
Hey Theresa,
There's rarely ever a worm case in my practice, especially in the raw fed patients. They are too healthy to allow worms a home.
If you shift to a raw balanced diet and still see positive fecal tests a couple months later, it's a good bet they've got chronic disease allowing susceptibility to remain.
That's best addressed by a homeopathic vet who treats constitutionally, i.e. the "whole dog." When the chronic disease goes, so will the worms.