Why do companies go for a third-party recruiter, and not just recruit on their own?

An employer may choose this route for various reasons. Often times, an employer has exhausted their recruitment efforts first before engaging a third-party. Firms like Kernel are in the business of recruiting so we have access to an extensive talent pool, the latest technologies, tools, staff and methods to find talent that the employer may not. Employers also use recruitment firms to outsource recruiting due to time constraints or other factors as well, sometimes we are engaged because it is a confidential search and they can remain anonymous.