"We're putting food in their stomach which slows down the metabolism of alcohol but we're always looking out for people at risk," Mr Caldwell said.
"Very often we take young people home or to a safe location. Or sometimes to hospital if they're too inebriated to hold a conversation."
The distinctive Street Help van travels around numerous city suburbs and to townships like Te Puke, although it usually winds up in Tauranga's CBD after midnight.
Get Smart also runs a specific programme targeting at-risk primary school girls aged 8-10 to help build their self-esteem and life skills, and Mr Caldwell regularly speaks to local high school groups and training institutions about goal setting plus drug and alcohol-related harm.
"Research shows just disseminating information about drugs and alcohol has little to no value. However, if you climb into their personal lives and talk about what they want to do and achieve in future, then position drugs and alcohol as a possible saboteur, then they see those subsequent messages in a totally different light."
Mr Caldwell said BayTrust's support had been invaluable, and the $20,000 would help pay for staff wages and office expenses.
"The role of BayTrust over a number years in supporting our operational costs has been enormous," he said. "We are so grateful for their involvement in helping us identify where we're making a difference and how we can build capacity in the various services that we offer."
BayTrust chief executive Alastair Rhodes applauded Get Smart's efforts to tackle such difficult issues in our community.
"Working with our region's youth to try and change attitudes and reduce dependence on alcohol and drugs will ultimately benefit us all, and help make our community a safer place."
Mr Rhodes said BayTrust believes the best way to support organisations such as Get Smart is to help fund their ongoing operating costs.
"That helps take the pressure off and allows them to focus on what they do best - providing great services for our young people. Most other funding bodies do not fund this area, preferring to give grants for specific projects only.
"We're happy to be able to support groups like this who are delivering our vision of strong, healthy and vibrant communities."
A total of $463,000 was granted to 25 different community groups (including Get Smart) in BayTrust's latest round of applications which are granted every three months.