New research on lures for rats and possums has shown that their favourite is not the traditional peanut butter or cinnamon…. Rats actually prefer cheese, milk chocolate, Nutella and walnuts while possums prefer apricot and almond.
The driver for rats is energy giving foods, especially with high fat. Possums on the other hand are looking for protein.
NOTE: Be aware that native birds like kaka and kea also enjoy apricots and almonds but cinnamon is a deterrent to them so may be a safer option.
Read the full article at http://predatorfreenz.org/better-baits-and-better-trapping/