Common Ringtail Possum

Common Ringtail Possums are protected animals that will enter roof voids if access routes are available; prevention relies entirely on habitat exclusion and environmental modification rather than deterrence. Cap all chimneys with stainless steel or heavy-gauge mesh caps secured with brackets; check eaves, soffits, downpipes, and broken roof tiles for gaps wider than 3 cm and seal with 1/4-inch hardware cloth or aluminium flashing secured with galvanized fasteners. Trim tree branches to at least 1.5 metres from the roofline to remove the 'ladder effect' that allows possums to vault onto the house — especially critical for Federation-era Australian homes with extended eaves and weatherboard cavities, Queenslander-style houses with elevated timber voids, and brick-veneer properties with gaps in cavity walls. Install possum-deflectors (angled guards) on downpipes so the animal slides down rather than climbing, or remove climbing aids such as decorative vine trellis adjacent to rooflines. Provide alternative shelter in the garden — a purpose-built possum nesting box positioned 3–4 metres high on a nearby tree — which often encourages the animal to nest off-house and remain in the area. Remove external food sources: secure rubbish bins, do not leave pet food outside, and remove dropped fruit from beneath trees. These habitat modifications are most effective when applied comprehensively and in combination with professional inspection by a licensed operator to identify and seal all active and potential entry points.