Sodium Monofluoroacetate (1080) Water-Residue Analysis after Large-Scale Possum Control
Successful possum control operations were conducted in 1990, using aerially-sown sodium monofluoroacetate (1080) possum baits, at Waipoua (85% kill) and on Rangitoto Island (93% kill). In Waipoua Forest Sanctuary, streams and rivers were monitored for 4 months after 100 tonnes of 1080 possum baits were sown over 17 000 ha of forest. At Rangitoto Island, adjacent to Auckland, surface and ground water samples were analysed for 6 months after 20 tonnes of 1080 possum baits were sown over the 2300 ha island.