Boxelder bugs are no exception, as these little black and red insects like to feed on the leaves and seeds of trees. Just like getting rid of gypsy moth caterpillars and repelling cicadas ...
The bugs are seed-feeders and are so-named because of a strong association with their namesake host, but only female trees. Boxelder is dioecious (= “two houses”) which means individual trees ...
And they do not harm the trees. Annoying? Yes. But boxelder bugs can be expected year after year regardless of what you do to prevent them from returning.