The 34-year-old penned a strongly worded letter to Craig Jelinek, CEO of the retail giant, after an undercover investigation by the Humane Society revealed extreme animal mistreatment at one of Costco's major egg suppliers, reported the New York Post.
The "Notebook" actor did little to hide his disgust, citing video footage of "rows upon rows of birds confined in filth-laden cages with the mummified corpses of their cage-mates - eating, sleeping, defecating, and laying eggs on top of dead birds."
"It is appalling that Costco has been selling these eggs with deceptive labeling on cartons featuring graphics of birds living out in a green pasture," wrote Gosling.