As sunlight reflects off the tape or foil it ll disorient and irritate pest birds.
How to remove pest and birds from roof tiles.
Working with roof tiles is a lot easier when you know a couple of basic tricks.
This video from bunnings shows you how to take a tile off and replace it prop.
When the tape flaps in the wind it ll make a sharp metallic clacking sound.
Keeping your roof space dry with weatherproof tiles and blocking out birds and rodents will reduce their food sources.
In cases like this some.
Feeding primarily on dead carrion they will pick open a dead animal eat what they want and then leave the carcass to attract flies mosquitoes and disease carrying bacteria.
If the whole roof is poorly aligned birdstop will not help.
To remedy the problem remove the first row of tiles and realign them so the birdstop will fit properly.
Insects will usually only move into your home if they have a food source.