The Danish Haven: Silverfish and their Source.

The other night I got home and snuck up to my upright floor light to turn it on quickly to see if I could catch any silverfish, and oddly, none were under the upright light when I kicked it (or at least none skittered out), but one was perched up on the top of the wainscotting behind the lamp. I've also begun to notice that if I drag the tip of my house sandal across the gap between the wainscotting and the floorboards, occasionally a silverfish skitters out and then skitters back in. That makes me think they either hide there or have a nest there. I wonder if maybe I could caulk up that gap everywhere?