Leicestershire Police is warning Melton van drivers not to leave any tools or anything of value in their vehicles overnight.
It follows a spate of vans being broken into, mainly in the north of Leicestershire, earlier this month.
Officers are urging van drivers to remove their tools overnight, to use a garage if they have one, to park in well lit areas and to review their vehicle security.
They have also been working closely with hotels to encourage them to improve car park security.
Detective Inspector Mark Ringrose, from the Force Investigation Unit, said; “We’ve made some significant arrests recently but incidents are still being reported to us.
“We know it can be inconvenient to remove tools from your van, especially if you’re staying in a hotel, but it can be even more inconvenient if your tools are stolen and you can’t work until you replace them.
“Power tools can be really expensive which is why they’re attractive to thieves so we’d urge builders and tradespeople to think about the security of their vehicles, consider fitting a cage and a stronger external lock and think about where it is parked.”
Anyone who sees any suspicious behaviour should report it to police by calling 101 or alternatively call Crimestoppers anonymously on 0800 555 111.