Does anyone know how these packets work? Do the silverfish just have to get near them and they die or do they have to feed on them or what?? Thanks!

Silverfish eat paper, among other things. They stay in dark places and are attracted to dampness. The contents in the envelopes kills the silverfish. We noticed a remarkable difference in our house when we put these packets out. Place them in closets against the walls, in corners in rooms, under bookcases, in your basement, behind furniture, etc. Check for awhile to get a good price. It is worth trying this product. It is certainly safer than putting powders out. Hope this helps.

Is this product odorless?

It has no odor. I have waited to review this product to see if it worked. All I can say is I haven't seen a silverfish since I put these aound my house.

Can they be put inside kitchen cupboards if they are not touching food or dishes?

Silverfish- regular: Lepisma saccharinum longtailed:Ctenolepisma longicaudatum Both Diatomaceous Earth (DE - which contains the tiny, fossilized, sharp edged shells or silicate cell-walls of ancient diatoms, single celled marine creatures) and Boric Acid (BA - a weak acid compound derived from borax) in crystallized form are not very poisonous to us. Instead the insects' shells are scored by DE which also, along with BA, is not safe for THEM to EAT (as I understand it). Either way, when they eat the baits the silverfish soon die. They usually are attracted to dark, dank places which have or are near what they like to eat. What they often eat or places they habituate include: * Starch (found in some clothing and foods and esp. in wallpaper paste) * Some types of cloth * Wallpapers * Carpet * Dry foods * Paper * Boxes * Other substances containing cellulose * Attic Insulation * Light fixtures * Electrical outlets * Behind Refrigerators and Ovens * Inside walls * Behind and under furniture * Underneath siding, etc. For me, because I don't go to many dank places or small crevices, they are usually found on a wall. But I think they don't go on walls often. More often I see their scat on counters, but a lot of people find sign of them in drawers and other places where clothing or books are kept. They're not much attracted by eBooks. You can spread BA or DE at points of traverse or egress, especially near books and other paper, points where they've been seen or where they might enter a house or where they likely hide. Both DE & BA are powder- or dust-like. Neither is particularly dangerous to touch, for us, but should not be eaten, and don't get either in your eyes. There may be a little contact danger for some pets, but again, neither is particularly toxic to mammals. By putting either out in bulk form, you'd be adding dust to your environment. In this way, despite the exorbitant price, the baits (which contain BA) are convenient, usually effective to a degree, and very much neater than spreading dust, powder or crystals on your floor, along walls, at the corners of doorways, in or near crevices, etc. When I put out baits of any kind, I always mark [yyyy.mm], year and month, on them with a Sharpie™ or other indelible marker, then let them sit a day before setting them out so the smell of the ink dissipates. At your replacement interval you can tell when they've been set out, and that -may- help give a rough idea of their effectiveness - seen these insects or other sign of their presence? Fewer? More??

Production description said that 2 oz is for 100 square feet? then, should I purchase 10 packs of it for my 100 square feet space??

No. 1 box has 24 paks. So 1 is plenty.

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H**L

Silverfish control

Fast delivery and this is a great product! Works well.

9.01.2026

M**R

Silverfish deterent

Seems to be working . Easy to use.

26.12.2025

I**O

Gone Fishin' with Dekko Silverfish Paks

I unpacked and placed several Dekko Silverfish Paks throughout my home in hopes of reducing the frequent appearance of silverfish. Although I can confirm that these paks did not eliminate my silverfish (I still see silverfish, occasionally), I can confirm that I found quite a few dead 'fish near the paks and that I've had very few silverfish sightings since application.

22.05.2013

O**R

After a few weeks, I stopped seeing silverfish scurrying about.. These Dekko Silverfish packs work.

I had a terrible silver fish problem in my shed and unfortunately that's where I store a ton of magazines and books. I didn't want to take any chances so I put the Dekko Silverfish Packs under all of my file cabinets & up on top of the shelves. I think I've been able to make a big dent in the infestation. I will quickly open the door and turn on the light but now (after a few weeks) I'm not seeing a silverfish scurrying about.

25.07.2025

J**3

Easy to use

I ordered a pack of these to help with silverfish and placed them over the last few weeks. Not sure yet if they are helping, but will order another pack to add to additional places in my house. Will update review in another month. Update at 2 months: I've put these above kitchen cabinets, in upstairs and downstairs bathroom cabinets. I've still seen them in the kitchen and bathroom ( although not above kitchen cabinets by ceiling). Until lastnight, I hasn't seen any upstairs. But saw one on the carpet and it went between bedroom moulding and carpet. Yuck. Guess I need to buy more and pull out all my furniture to vaccum. I've found them on the garage ceiling. May use them in garage too. Going to buy another pack and place more of them.

4.04.2023

S**L

Rids the House of Pests

I've been using these for years and they are fabulous. My books are safe from silverfish and so am I. When they bite it hurts. No more bites for me.

11.11.2025

M**E

Didn’t work at all.

I followed the directions and put these in groups of two or three in all of the areas where I was seeing silverfish. Not only did they not work, I was seeing silverfish crawling directly on and underneath them with no effect. I’m not sure if the product is I received is expired or simply does not work, but what a waste of money!

12.09.2025

A**R

Nice !

Easy to use! Much better than those sticky traps.

19.01.2026

Best Sellers Rank	#4,727 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Beneficial Pest Control Insects
Brand	dekko
Customer Reviews	4.2 out of 5 stars 2,243 Reviews
Item Form	Powder
Item Volume	1 Quarts
Manufacturer	DEKKO
Number of Items	1
Scent	Unscented

Silverfish Packs

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