In the lands across the Tasman where possums are considered an invasive species and not a protected one, a new technology has been born. The brainchild of the New Zealand based Goodnature team, The Henry possum traps are lightweight units that fire automatically to quickly and humanely kill the problematic animals. In a land where over 30 million possums run rogue, decimating native flora and fauna, the traps have been well accepted.
The lightweight traps automatically fire and reset 12 times; reducing labour costs compared to regular single catch possum traps. This enables more money to be allocated to the purchasing of more traps. The traps are toxin free, and are placed in trees or off the ground where possums dwell. They work by shooting a compressed gas powered, polymer piston into the skull of the animal. This action kills the pest immediately and humanely; the instant the trap is triggered. Once the animal has been struck, the piston retracts and the carcass of the deceased possum drops to the ground. The traps then reset themselves ready to lure in their next victim.
The traps were first tested in 2011 as part of a $4 million pest control initiative announced by the Green Party and the Government in 2010. These traps are effective at killing possums and helping protect the birds and forests that New Zealanders love, said Green Party conservation spokesman Kevin Hague.
Since their inception a few years ago the team at Goodnature have expanded their trap range to work on other pests including rats and stoats, and there is much more potential for further expansion. If its possible to create traps that can specifically target other pests, while not attracting or harming native and protected species then the sky is the limit.
We spoke with a possum removal expert from Brisbane about the potential for the traps in Australia. Possums are a protected species in Australia. She said. So these specific traps would be illegal to use here. However there is definitely scope to expand the same technology to control other pests. If Goodnature could work out a trap that could target rabbits, foxes or even the cane toad, then they would sell like hotcakes!
Rabbits were originally introduced with the First Fleet, and became a problem after an outbreak caused by an 1859 release. Since then they have cause untold billions of dollars damage to crops and land across much of Australias arable regions. Foxes were also release after European settlement, in the 1870s. The reason for this was as a target for recreational hunters. The spread of foxes closely followed the spread of rabbits and today foxes are thought to have spread across most of the mainland south of the tropics and even as far as Tasmania. These pests are a problem because they prey on native wildlife and also farm livestock including calves, lambs, poultry, and goats.
The cane toad problem in Australia needs no introduction, with the story of their invasion and expansion being infamous around the globe. A trap that targets these pests specifically might be a bit more difficult than one for other animals though because there are so many other small animals, reptiles and amphibians that might also be lured into the traps.
In their current form, the Goodnature traps have been used as far away as Hawaii, Puerto Rico and even Sweden. While the current model rat trap already offers significant benefit to Australians in need of respite from pests of that nature that plagues our shores, if their technology can be expanded there is a bright future for its usage here to aid our endangered wildlife and frustrated farmers.