so, i have issues with insects penetrating the leaky gaps in this run down old villa in croatia. the three bugs that get inside the most, and irritate me, are, by order of most irritation, stink bugs,...
What my wife does to repel bugs is cut a lemon in half and insert cloves in them. Then puts them near leak areas. It works like a charm against our local bugs. Not sure if it works in yours, worth a try though.