Keeping moths away?

We've got a rather irritating moth problem in our house. It's only in the upstairs office which I cleaned to within an inch of it's life today but tonight we've come back in and gone upstairs and there's loads of the little ******s flying around still! No windows were open either.

They're really small and brown and don't grow any bigger. They just seem to hang out in here, never anywhere else in the house. I found a few of the little moth worms in some of our books so I cleaned all of them and the shelves and put them back but they're still here Cleaned all the carpets, curtains, sides, everything!

Is there anything I can put in here that will either get rid of wherever they're coming from or just keep them away all together?

get a bat lol we had one fly in our house last year was well cool it hung on our boys doorframe wicked little creatures