Pork Products are your friend
Hang them from every window and doorway like Kryptonite.
There is an entire town in Portugal that is now famous for dried pork sausages hanging everywhere- they started around the time of the crusades when the diaper-heads were invading all over. They successfully repelled them by just becoming the largest pork sausage producers, and every home raised at least a few pigs.
“....and every home raised at least a few pigs”
Portugal: The Switzerland Of Southern Europe