The trucks were unveiled on Monday morning, each emblazoned with Garage Sale Trail logos and ready to spread the message to reduce, reuse and recycle to the masses.

The event encourages people to register their own garage sale, which then forms part of a "trail" in their community.

Launceston Mayor Albert van Zetten welcomed the event as an innovative way of reducing landfill.

"We encourage people to get involved with a garage sale and to find out those items that maybe they're not using and that they would just throw away, but for somebody else, that's going to be their treasure," Alderman van Zetten said.

"It's really going to help us long term in our community."

Meander Valley Mayor Craig Perkins said the event was a chance to build relationships within the community.

"It's an opportunity for people to be able to go about selling their unwanted goods in a fun and exciting way and to bring the community together," he said.

"You actually get to know your neighbours and you might end up swapping bits and pieces between each other."

This year's Garage Sale Trail will be held on October 24, with organisers hoping to improve on the 333 registered sales held for the state's 2014 effort.

To register, visit www.garagesaletrail.com.au.