We had this when we first moved into our house. Did you know that ladybeetles don't die in the winter like a lot of bugs? They all congregate together in a space and kinda hang out/hibernate all together in a tight little space.
Does your house have a light/white colored south facing wall? THat's a sure signe they'll come to your house, cause it's a warm bright place to stay. Also, if you have a lot of heavy or dense foliage around you will have more. We had so much english ivy around, and removing it really helped.
They'll come in, no matter what. We had the entire house sealed, but they still got in. There are tiny little bug sized holes everywhere you can't see. We call our bathroom windowsill the ladybug graveyard.
I think they are living in the old stove flume hole, but I'll let them have it for now. I'll be getting a great new stove soon enough, and then it's curtains, I tells ya'!

We thought they might be the wood beetles, which look very similar to the lady beetle, but they are actually native lady beetles, which can vary from bright red to burnt orange.
My advice: wait it out. They'll drowned themselves in your waterglasses, and you'll have to empty the light fixtures in the spring. But think about it this way: it could be worse! It could be spiders, or scorpians, or biting ants, or bats, or termites, or thousand leggers, or, well, you get my drift!
