To help develop new tactics for the local elimination of possums using a fast-acting toxin (1080; sodium fluoroacetate), we tested whether possums that had survived a cereal 1080 baiting could be poisoned with an alternative peanut butter paste (PB paste) bait that differed greatly in appearance, texture, smell, and taste. A two-stage field trial was undertaken in 2018 in three 50−80 ha study blocks in mature pine forest near Rotorua.
New Zealand aims to eradicate possums (Trichosurus vulpecula) and ship rats (Rattus rattus) nationally by 2050. This aim will require more effective tactics for locally eliminating these pests. Therefore, we explored whether possums and rats could be eliminated from large areas using pre-feeding and two applications of sodium fluoroacetate (1080) bait spaced a few months apart.