Pick up a bunch of sticks of different sizes, cut them to size, bundle them together with steel wire and put said bundle in a secluded spot in the garden. A couple piece of rotting wood will also work wonders.
Insects don't like these "hotels". Here are a couple of gigantic ones I've seen in France:
They must have cost the department a fortune and there wasn't a single bug around them. Talk about tax money at work.