I'm not a fan of Merrick products, neither foods nor treats.
The food is overpriced for the quality it offers, quality control is iffy at best (lots of complaints about foreign objects). What makes me nervous about the treats, mainly the various animal parts is that Garth Merrick also owns one of the largest dead stock removal companies in Texas, and also rendering facility (Hereford By-Products and Tejas Industries). "Merrick Pet Foods" is conveniently situated at the site of the rendering plant.