The campaign was launched in January by Lothian and Borders Police, Fife Constabulary and Central Scotland Police.
They asked members of the public to report suspicions about people making money illegally to the charity Crimestoppers.
Up to 400 officers have been involved in the three-day operation, which begun on Wednesday.
The police say Crimestoppers reported a 31 per cent rise in all calls across the East of Scotland, which was used for the operation this week.
More top news
Paul Brand & guests - including Lib Dem leadership favourite Tim Farron & the SNP's new Border MP Calum Kerr. Watch the full programme here:
A look ahead at the forecast for the Border region.
Preparations have begun for a two day mountain biking event, the Enduro World Series, in the Tweed Valley this weekend.