These are NOT "japanese beetles", but are Asian Lady Beetles (NOT lady bugs). The are orangish, brownish, reddish, not the bright red associated with lady bugs. They don't bite, but they DO pinch and it hurts! BTDT. In the Fall, they work their way inside the walls/attics through small cracks or even boldly through your front door or down the chimney. They are looking to hibernate inside the walls/soffits wherever they can find space. "Once ladybugs have become established in the home, there aren't a lot of treatment options. There are not a lot of recommended chemical measures at this point. The easiest way to remove ladybugs, once they are indoors, is with a vacuum cleaner."
Chemicals do not work and will do more harm than good. The only way we've been able to deal with them is by sucking them up and THROWING the bag away IMMEDIATELY or by emptying a bagless OUTSIDE. Don't squash them, either, they stain and they STINK.
When we tore out a wall to do our kitchen addition, the space was literally crawling with thousands of them that had gotten inside the walls. We used 3 or 4 vacuum cleaner bags to get rid of them, but a few still seem to make it in every year.
