They don't like the smell of cinnamon, lavender, cedar, citrus, and basil. Try filling a spray bottle with distilled water or vodka and about 25 drops of the essential oil. You can spray baseboards, the area beneath the bathroom and kitchen sinks, and anywhere else you’re worried about finding silverfish. To keep the insects away from clothes, store them with sachets of dried lavender or tuck cinnamon sticks into drawers.
https://www.rodalesorganiclife.com/home/6-ways-to-get-rid-of-silverfish
These videos will help.
https://www.google.com/search?q=silverfish+control+natural&rlz=1C1BLWB_enUS700US700&source=lnms&tbm=vid&sa=X&ved=0ahUKEwiCht36runYAhUHKWMKHQ4bC6sQ_AUICygC&biw=1422&bih=684&dpr=1.13
Can't help get rid of the ones you already have but Riddex plug ins will help keep out new ones once you do get rid of them.
They don't like the smell of cinnamon, lavender, cedar, citrus, and basil. Try filling a spray bottle with distilled water or vodka and about 25 drops of the essential oil. You can spray baseboards, the area beneath the bathroom and kitchen sinks, and anywhere else you’re worried about finding silverfish. To keep the insects away from clothes, store them with sachets of dried lavender or tuck cinnamon sticks into drawers.
try WD40 as that keeps ants and other small insects at bay eric