As a former Costco employee, there are a lot of must-buy products and delicious staples I get at the chain each week. Jesus Sanchez Garcia I worked for Costco for eight years, and I still regularly shop there for my six-person household. Typically, I buy fresh produce there, like Windset Farms Roma tomatoes and Good Life Organic squash. Kirkland Signature triple-chocolate muffins, chicken breasts, and free-range eggs are staples, too. I spent eight years working at Costco, and during that t...