Kirkland Signature Ultra Clean Laundry Detergent

Kirkland Signature is the world-renowned private label brand of Costco Wholesale Corporation. The Ultra Clean line of laundry detergents is formulated to compete with leading national brands, offering high-performance cleaning at a bulk-value price point.

While Costco does not publicly disclose the specific third-party manufacturers for all Kirkland products, their laundry detergents are primarily manufactured in the United States through partnerships with major chemical and cleaning supply corporations. The brand is managed and owned by Costco Wholesale, which maintains strict quality control over the production process to ensure consistency across their global warehouse locations.