Physical Inspections of Outdoor Advertising Carroll Media Services has been the leader in third-party field audits and pre-rides for Out-of-Home advertisers since 1993. Our clients believe that actual OOH and DOOH proof-of-performance (POP), as well as reporting on environmental and qualitative measures, can only be truly verified in-person by a third party. Who We Are&hellip; <a href="https://carrollmedia.com/" rel="bookmark">Read More &raquo;<span class="screen-reader-text">Carroll Media Servi