Silverfish, one of the nuisances in pest family, measures about half inch in length, ranges in color from dark silver-blue for adult to pale silver for adolescent, has a scaly appearance with two antennae on the head and two to three prongs on the tail. Do not underestimate their reproductive ability, for a female silverfish can lay 2 to 20 eggs per day; in a few weeks, you will have enough population of silverfish to organize a bash in your home.
Silverfish live in dark and moist areas. You can usually find them in bathroom, closet, under sink, basement, and laundry room. They love to gnaw on books, paper boxes, wet wood such as damp windowsill, and cupboard. It is not easy to catch them somehow because they like to scamper around in the dark and, by the time you turn on the lights, they have already gone into their hideouts.
Here are some of the methods you can adopt to rid of silverfish.
(i) Silverfish dislike the smells of peppermint, citrus, camphor, lavender, and rosemary. You can create a repellent out of them by mixing these organic substances with water into a spray can and spray at the infested areas. Alternatively, you can grind these herbs into powdery form and sprinkle them on the silverfish nests. You can also place these herb leaves into sachets and hang them in closets, cabinets, on bookshelves, and around the dark and damp areas of the house. Another way is to dip some cotton in these herb oils and wipe around the infested areas or place the soaked cotton balls at their hideouts.
(ii) Use air conditioner, fan or dehumidifier machine to lower the humidity level inside your house. Remember to seal off the cracks and crevices on the walls with caulk before you do the dehumidification.
(iii) Vacuum your house thoroughly. Vacuuming helps to reach the hard-to-access places (such as narrow openings and holes) and suck out the silverfish as well as their larvae. Dispose of the sucked silverfish and eggs in a proper manner by placing them in a plastic bag, seal the bag and discard it in the trash can.
References:
https://housewifehowtos.com/clean/how-to-get-rid-of-silverfish-and-keep-them-away/
https://www.almanac.com/pest/silverfish
http://manvspest.com/get-rid-of-silverfish/