Lady Bugs?

Asian bean beetles. Their numbers are dependent on aphids, their primary food source, Aphids on soybeans were especially plentiful this year, resulting in a summer long feast for bean beetle larvae, which means a bumper crop of the adult beetles.

My neighbor grows soybeans right behind my house.

Best way I've found to deal with these little pests is with a shop vac. They do not breed indoors, mostly they find a cozy spot inside the walls and die.