get rid of possums,dogs cats bandicoots

I just heard this on the Garden Show...Graham Ross the famous australian gardener, on radio 2gn this morning

Strayban...it is a sensor that emits a high frequency noise, the pests will never come back
Graham had many possums at his garden centre eating all his roses, he also has a huge property

The things costs $275, you can only buy it direct from the manufacturer. It is guaranteed to remove the pests or your money back.
So there is the answer to stray cats, dogs possums and anything else that might love your garden.
He said for bandicoots you need to tell the supplier so it can be inserted closer to the ground.
there is an 1800 tel no

as for the community gardener, I figure you would need a battery operated device like this....
https://www.strayban.com.au/?gclid=CKWAkdqchLUCFQcipQod6iMAog