I know this is an old thread, but I've seen a few silverfish this spring (after such a hard winter?? I'm in SW Ohio). As far as I know, we didn't have any silverfish last year. We moved to this house last June.
I'm worried about our books, board games (these are expensive, seriously, and Cat'r has hundreds), and my tarot and oracle card decks (I am sure I have over 100--I know, not that large a collection compared to many).
So far I have only seen (and killed): one silverfish on the hearth by the gas log fireplace in the living room; one near our bathroom vanity in the en suite; and one just tonight on the wall by my desk in my office. I absolutely hate them. Hate ALL bugs! Okay, I like fireflies (aka lightning bugs).
Here is what I'm planning on buying:
http://smile.amazon.com/gp/product/B002Y2OW6A/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ADZPCEAMVGU2L
(some good reviews and especially in the answered questions section--no affiliation: it's just where we buy a lot of stuff, plus free shipping because we have Prime)
I have a lot of allergies and sensitivities, so I don't want to use harsh chemicals or natural-but-smelly things. The active ingredient in these packs is boric acid.
I think I might try this too:
http://smile.amazon.com/gp/product/B001O7AYO0/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
This might help on the spider problem too, I'm hoping.
And we need to do more thorough vacuuming upstairs where there is carpeting.
Ugh. Up so late because I have the willies and afraid to go to sleep now.
CountryMouse