It was a small rural property in Myrrhee that a group of people from Melbourne chose as the location for a house party over the weekend, full of drugs and loud music.
But they did not expect police to be waiting for them as they started their 250-kilometre drive home, some still allegedly under the influence of drugs.
Wangaratta Highway Patrol tested 10 drivers on the site of the dirt road across Sunday and Monday.
Sergeant Michael Connors said eight of those people were allegedly found with either cannabis or methamphetamine in their system.
"They returned positive tests and they were prohibited from driving so they had to make other arrangements to get back to Melbourne," he said.
"We're pretty displeased with the results.
"It just shows that if we're aware these parties are happening and they're going to take drugs, they will be detected."
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The property was rented on Airbnb from the owner under false pretenses, claiming it was for a small number of people to celebrate an engagement.
Nearby residents first alerted police to the unregistered party when they complained about the noise, so five officers travelled to the small town in the King Valley to set up the alcohol and drug testing site.
"Police weren't aware of the party until we received a noise complaint because the music had been going for a couple of days," Sergeant Connors said.
"It was a group of people on the property.
"They weren't from the area, they've rented it out for the weekend."
Police have reminded people attending parties in country Victoria that this type of alcohol and drug testing can occur anywhere.
Sergeant Connors said "we will go where we are needed" and officers did not just target drivers in the city.
He said there were many winding roads lined with trees between Myrrhee and the Hume Freeway where the drivers could have crashed.
"It's pretty disappointing to get those results," he said.
"These people think that they can take these drugs and can just go and drive home afterwards, it's not good."
Police are conducting Operation Furlong between Friday and Tuesday, to target driver behaviour - particularly drink and drug driving - over the Melbourne Cup long weekend.