Following a determination in 2015 that eradicating the mice from Marion Island was feasible, a detailed planning process, guided by internationally used methods, began. The eradication strategy for Marion Island builds on years of scientific research and practical experience gained from over 700 island eradications, the vast majority of which have been successful.
The Mouse-Free Marion Project’s eradication strategy is proven: a fleet of helicopters guided by GPSs and equipped with bait-application buckets will spread rodenticide bait across the entire island. This method ensures that every individual mouse will have access to the bait.
Decades of rigorous research and field experience have resulted in a specially crafted rodenticide bait that mice find irresistible. Bait pellets are robust enough to be dispersed aerially from a baiting bucket and remain potent and palatable long enough in severe weather conditions to be consumed by mice. The bait’s potency is carefully calibrated to avoid posing long-term risks to other species and to the environment. After the initial application, a second application will occur to ensure comprehensive exposure of every mouse to a lethal dose of the bait.