We've had some silverfish off & on for a year or two. Well, for the past few months I started seeing some upstairs several times a week. It really creeped me out so I started sleeping downstairs on the couch.
DH was not happy about that! I came home from work about 3 weeks ago & he said "The exterminators were here today. It should take about a week & you won't see anymore bugs at all, of ANY kind." YIPPEE!!!
It turns out it wasn't expensive at all. We should've done this last year. The guy will come back every 3 months also.
He told DH that like it warm....that's why I've always seen them upstairs & that they work their way down. EWWWW!!! They also like insulation.
BTW, I have not seen one LIVE silverfish since....but a day or two after the exterminator was here, I did find 2 dead ones in the bathroom.
Call someone. You don't have to live with the bugs. I should've done it last year!