June 19, 2017 — United Pet Group, a division of Spectrum Brands, Inc., is voluntarily expanding its recall of multiple rawhide dog chew products to include private label brands.
The recall was initiated due to possible chemical contamination and includes the affected brands and products below.

Original Recalled Brands
United Pet Group previously initiated a voluntary recall of its branded products on 6/10/17.

What Caused the Recall?
The recall was initiated after United Pet Group identified that certain of its rawhide chew manufacturing facilities located in Mexico and Colombia, as well as one of its suppliers in Brazil, were using a quaternary ammonium compound mixture as a processing aid in the manufacturing of rawhide chews.
The compound is an anti-microbial chemical that is approved for cleaning food processing equipment. But it has not been approved in the U.S. as a processing aid in the production of rawhide chews for dogs.
United Pet Group received very limited reports of pet illness based on the volume of possibly affected rawhide chew products manufactured and distributed.
The primary complaint received from consumers was that the affected product had an unpleasant odor. Diarrhea and vomiting were also reported.
Exposure to quaternary ammonium compounds through direct ingestion may cause the following symptoms in dogs: reduced appetite and gastric irritation, including diarrhea and vomiting.
These symptoms may require treatment by a veterinarian depending on severity.
read more:
https://www.dogfoodadvisor.com/dog-food-recall/rawhide-dog-chews-recall-expands/