We used to have them in our last place, I think that they are often a problem in old houses. Nothing much worked though we sprayed and put out the sticky traps. They used to be particularly keen on going underneath things, and on nibbling the edges of carpet, particularly rugs. Now we've moved we have hard floors everywhere and, though we see the occasional moth, we've had no real problems.
I also keep clothes that I don't wear very often in sealed hanging bags as I lost my two favourite winter coats and several lovely jumper.