Authorities in California and Nevada have rounded up 19 unlicensed painting contractor in a joint “border blitz” sting operation that focused on the South Lake Tahoe area.

The April 30 joint operation was the third by the California Contractors State License Board (CSLB) and Nevada State Contractors Board (NSCB). The roundup snared 11 people on the California side and eight on the Nevada side on charges of illegal contracting. Most were also charged with illegal advertising.