The first incident occurred on Saturday, July 2, at around 7.15pm, when police stopped a Vauxhall Zafira in the Livingstone Place area, before charging a 45-year-old woman under Section 5 of the 1988 Road Traffic Act.
Less than two hours later, shortly after 9pm, a Vauxhall Corsa collided with a parked car on Ladhope Drive, which led to a 55-year-old woman being charged.
Finally, at around 1.40am on Sunday, July 3, officers stopped a Renault Laguna on St Andrews Street.
A 26-year-old man was subsequently charged and was expected to appear at Selkirk Sheriff Court today (Monday, July 4).
Inspector John Reid of Melrose said of the incidents: “There is just no excuse to drive over the legal alcohol limit.
“If you’re planning on going out for drinks, leave the car at home and make alternative arrangements.
“Not only are you risking your own safety if you get behind the wheel over the limit, but you’re risking that of every other road user.
“Furthermore, you can face a significant fine, a driving ban, and even imprisonment for doing so.
“We’ll continue to have increased patrols in place on our roads over the summer months to deter and detect this kind of behaviour.
“If you have concerns about a driver, please call Police Scotland on 101 or report these anonymously to Crimestoppers on 0800 555 111.”