Chief Inspector Andrew Allan, from Lothian and Borders Police spoke to our reporter Jenny Longden about why the raids were important.
As a result of today's raids in Galashiels, Kelso, Selkirk and Hawick, 11 people have been arrested.
Police relied on information from the public to target specific homes.
They seized street dealer amounts of Heroin and Valium, a cannabis cultivation and personal quantities of cannabis, as well as £3000.
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Dry & bright for Monday & Tuesday- frosty starts & fog patches slow to clear. Cloudier skies from midweek, milder but more unsettled
The RMT Union is warning more than 2,000 City Link workers will lose their jobs on New Year's Eve. 28 staff are based at the Carlisle depot.
Any overnight mist should lift on Monday morning into good spells of wintry sunshine and patchy cloud. Frosty everywhere. Odd icy patch