I've worked at Costco for 8 years. Here are 11 products I swear by getting at the chain.

As an almost eight-year Costco employee with a busy life and an empty nest, I use Costco products to make my life more efficient, effective, and economical. Gary Hershorn/Getty Images I've been a Costco employee for about eight years, and I shop there often for food and essentials. Kirkland Signature roasted almonds, shelled pistachios, and nondairy oat beverage are staples. I also enjoy stocking up on distilled white vinegar, coffee, and certain medications at Costco. I've worked at Costco...