If using ammonia pour a small amount of ammonia into a coffee can with a lid.
Possum smell in roof.
They can also leave behind the foul stench of urine and brown stains of secretion from their glands which they use to mark their territory.
A possum is a large animal and it has no qualms relieving itself in your roof.
The usual signs of having possums in the roof are heavy bangs on the ceiling or roof at night as they run around hissing or coughing noises and stains or a strong ammonia smell caused by their urine.
Then the only solution is to cut an access point into the wall.
Possum living in whirly bird while we can generally locate most dead animals in the ceiling space of homes some manage to get into wall cavities or inaccessible places in the roof.
Spread something that smells potent.
Place it around 4 m up in a nearby tree.
Place a rag inside the ammonia and bring one end up through a hole cut into the lid.
If you ve ever had a possum living above your ceiling you know they can be quite noisy fighting screeching and running along the roof.
The subsequent liquid release will leave a mark as well as a pungent odour.
If this is the case we will of course discuss these costs with you before taking any action.
Return to the roof a few days later when the possum has gone out to feed around 10 pm is usually a good time and remove the nest box.
Pets including cats and dogs will also alert you to the fact that a possum is living with you.