Has anyone outsourced proprietary deal flow generation to a third party?

Looking for any commentary from those that have outsourced proprietary deal flow generation to a third party (e.g., Bainbridge, Captarget). I'm a solo searcher with a geographic constrained search and recently learned about companies that do this (mostly used by middle market PE firms). From my understanding, these companies will handle sourcing and outreach, and set up meetings with owners that are willing to take them. Curious if anyone has any success / caution stories to share, and/or any recommended companies they've worked with.