Colleague had a ShooRoo on a Subaru Outback. He ran a basic, replicated research trial where he ran the same section of road between Morven and Augathella in both directions, at dawn and dusk, over many days with the device on and off.
He counted the numbers of roos that moved towards the road and and the numbers that moved away from the road as well as the numbers that just stayed where they were. When he ran a statistical analysis of the data the ShooRoo made no significant difference to roo behaviour.
When we look at roo strikes across all our field staff of around 30 people averaging 50,000 km per year over the last 25 years the only valid correlation we can make is against the age of the driver.
Nothing is harder to see than the blindingly obvious!