Pallets are collected from Ollie's Frankton yard and broken down at a community work site. What can't be used for the traps is then cut into firewood and returned to Ollie.
"I look at it as a win-win for everyone. We're raising money for the rescue services through the sale of the firewood, and we're helping the environment by eradicating pests and keeping this wood out of landfills," says Ollie.
Senior community work supervisor Warren Smith said it's important to give community work offenders meaningful projects to allow them to make up for their offending.
"The offenders are really motivated when making the trap boxes and splitting the firewood. They know they're doing something really positive for the environment and community, and they're learning a range of new skills at the same time.
"If the work is worthwhile and meaningful, they show up and do a good job."
So far, around 200 trap boxes have been manufactured using the pallets. The trap boxes are given to Predator-Free Hamilton, a charitable trust that works with Hamilton residents, institutions and agencies to encourage and co-ordinate the effective and humane control and eradication of pest animals within and around the city.