At the rendering plant, time cannot be spared to remove even the green plastic bags the pets came wrapped in, let alone the insecticide laden flea and tick collars they were wearing. Even the very chemicals used to put these pets to death also find their way into the final product. When ingested, sodium pentobarbital has been shown to cause liver and kidney damage and renal failure. The pet food companies claim these chemicals are found in such low doses as to be harmless, but make no mention of what the cumulative effects of years of ingesting them may be. Before the meat even arrived at the rendering plants, it has already been saturated with chemicals.
Phenol is derived from the distillation of coal tar, creosote from the distillation of wood.
Both substances are very toxic. Creosote was used for many years as a preservative for wood power poles. Its effect on the environment proved to be so negative that it is no longer used for that purpose. The chemical cocktail does not end there, either. To prevent rancidity, a fat stabilizer is added to the finished product.