Yes I too have heard nothing really works to get rid of pesky possums ,all the deterrents are only effective against timid possums, resistance is futile.
Netting,wire fences and removing vegetation will keep them out ,I don't have a possum problem , too many foxes and owls here , cats are good at eradicating possums.
An instinctive hunter, the average domestic moggie is thought to chew through eight birds, 16 mammals and eight reptiles a year. Animals that aren't killed outright often succumb later, through toxoplasmosis, a parasitic disease that many cats carry in their saliva. "People say, 'Our cat has carried in a baby possum, but it's OK', But it's not OK. Cats have needle-sharp teeth and once that bacteria is in the possum's bloodstream it acts like a slow poison. You'll see paralysis in the hind legs within eight hours and if it isn't treated with antibiotics then there's a very low rate of survival."
