12 things about Costco that may surprise you

  • Costco is obsessed with toilet paper

    Photo, file: Jeff T. Green/Getty Images

    Costco cares more about toilet paper than most retailers, and there's a good reason why: Toilet paper is the No. 1 product at the company.

    It hires technicians to test toilet paper for thickness, strength and softness, CNBC reports. It sends merchandise managers to tour toilet paper mills, checking everything from paper quality to humidity levels to the water used in production.

    "How can you not fall in love with a product that is the number one thing that you sell?" former CEO Jim Sinegal told CNBC.

  • Kim Peterson

    Kim Peterson is a financial journalist covering business and the economy. She has written for several online and print publications, including MSN Money and The Seattle Times.