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.
More top news
The second of our special reports looks at the history of the Borders Railway - starting with the closure of the Waverley Line in 1969.
Predominantly dry over the coming few days with variable cloud & some sunshine. Cool nights but daytime temperatures recovering a little
The two boys robbed a Carlisle store earlier this year, after threatening the lone female shop assistant with a knife.