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.
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Three girls have been hurt after a stone was thrown through the window of the school bus they were travelling on in Carlisle.
Drivers are being urged to take extreme caution when driving this morning, as heavy snow covers routes across the ITV Border region.
The Met Office has issued a new amber weather warning for snow for the south of Scotland, and a yellow warning for parts of Cumbria.