Thieves have struck at Monbulk Mitre 10 for the second time in two days.
Monbulk Sergeant Luke Schroder said two men broke into the Monbulk Road store about 5am on Monday 11 February.
He said they stole seven Weber Q barbecues and three nail guns.
Sgt Schroder said the small, light-coloured car they used in the burglary was parked outside for an extended period.
About 5am the following morning, Tuesday 12 February, police believe the same bandits returned.
They took an iPhone and three carry boxes containing nail gun batteries.
Yarra Ranges CIU said they left the scene in a light-coloured Hyundai Getz, likely a 2002 to 2005 model.
Anyone who saw the car or the men or has other information should call Crime Stoppers on 1800 333 000.