Silverfish
is about 1/2 inch long, with a uniform silvery color over the upper
surface. Their bodies are long and slender, flattened. The bodies are
broad at the front, and gradually tapering toward the rear.
They can be found almost anywhere, but prefer damp, moderate
temperature places such as basements, laundry rooms, and under sinks.
Silverfish Biology and Habits
Silverfish prefer a dark, moist environment and require a large supply of starchy foods or molds.
Silverfish are considered to be nuisance pests that can feed on wallpaper pastes, natural textiles, books, and papers.
Silverfish also feed on mold or fungi that can grow on various surfaces.
They are fast-moving and can travel throughout buildings.
Once silverfish find a good source of food, however, they stay close to it.
Silverfish
go through only a three stage life cycle called gradual metamorphosis,
while many insects have a four stage life cycle (complete
metamorphosis). Silverfish may lay eggs at any time during the year,
and take 19-43 days to hatch. The life cycle from silverfish egg to
adult is three to four months. They prefer humid areas (75 to 97%
humidity), like bathrooms and moderate temperatures (70o to 80o F).
Silverfish
are found in basements, kitchens, sinks, bathtubs, in bookcases, on
closet shelves, behind baseboards, wallpaper, window or door frames,
wall voids, and sub-floor areas.
Silverfish are active at night or are active in dark places found throughout the structure.
Silverfish can be a problem year round.
Attics
are a favorite place for silverfish due to the abundant food sources
due to the recycled blown in paper insulation and storage boxes.
You may see silverfish trapped in sinks and bathtubs because they enter
seeking moisture and are unable to climb a slick vertical surface to escape.
Symptoms and Damage of Silverfish:
Silverfish
are found in basements, kitchens, sinks, bathtubs, in bookcases, on
closet shelves, behind baseboards, wallpaper, window or door frames,
wall voids, and sub-floor areas.
Because they molt during their adult lives their cast skins may be a useful detection too.
Silverfish diets are high in protein, sugar, or starch, including cereals,
moist wheat flour, starch in book bindings, and paper on which there is glue or paste.
Silverfish
can damage book bindings, wallpaper, paper goods and dry foods. They
may eat holes, irregular shaped in the wallpaper to get to the paste.
Silverfish may bite very small holes in various fabrics, including
cotton, linen, and silk, even though they cannot digest either linen or
cotton.
Firebrats will feed extensively on rayon, whereas silverfish usually damage it only slightly.
They may leave a yellowish stain on fabric.
Outside, they may be found in nest of insects, birds, mammals, and under tree bark and mulch
They can be found in wood shingles or sidings on houses, they may enter the home from these.
RECOMMENDED MEASURES FOR SILVERFISH CONTROL: How to Get Rid of and Kill Silverfish
Sources
of any undue moisture, such as faulty plumbing or condensation that
provide the humidity favored by these pests should be eliminated.
Dehumidifying reduces the moisture content of the air that these
insects find essential. Some methods for dehumidifying include: Mend
leaking pipes. Ventilate closed rooms and attics. Eliminate standing
water. Use a dehumidifier an air conditioner. Use silica gel which acts
like a desiccant such as
DRIONE DUST. Regularly vacuuming cracks and
crevices with a narrow vacuum tip also can be a good method to
physically remove these insects from their harborages. Removal of food
sources , stored in tight containers. If you have a problem of
silverfish inside your home, a good residual perimeter treatment of:
Cyonara 9.7Demon WP /
Cyper WP insecticide
Talstar
One or
Bifen It These residual insecticides, sprayed around entry
points and foundation of the house would be the first step. Spray along
the foundational wall, with a two or three foot band.
Cyonara 9.7,
Demon WP/
Cyper WP or
Talstar One/
Bifen IT: last for two to three
months. All these products are odorless. The wettable powder (WP)
formulation in the
Demon WP and
Cyper WP will leave a slight film that
can be seen against dark surfaces. The
Cyonara 9.7,
Bifen IT or
Talstar
One do not leave a film. However if you have a more severe problem with
silverfish , look into stored boxes and the insulation in your attic.
It is best to dust or bait these areas for greater control. When you
use baits or dusts, you do want to get it as close as possible to their
habitats to be effective. You never want to bait and dust in areas that
are visible. Dust needs to be in hidden areas such as :
Attics-Insulation Behind Refrigerators and Ovens Boxes Light fixtures
Electrical outlets Under siding .
A recommended dust for silverfish control would be
DRIONE DUST. It is a
desiccant dust that last for 6 months. It dries up insects has they
pass through it. Apply it in the attic in the insulation area in
particular, under siding, in storage boxes,light fixtures, electrical
outlets. Apply it to areas that can be kept dry. An easy way to apply
DRIONE DUST, if broadcasting in the insulation area would be the use of
a duster called the
DUSTIN MIZER,cranking out a large amount of dust at
a time. You will want one lb. of dust per 800-1000 sq. ft. For smaller
dust jobs
BELLOWS 8 OZ. DUSTER would work fine.
Another
very effective way is the use of baits in the attic or on the outside
for silverfish control. . INTICE GRANULAR BAITS(SAME ACTIVE INGREDIENT
AS NIBAN) works very well against silverfish as well as roaches and
crickets. It can be sprinkled out in a self contained one lb. bag, in
all the areas you believe they are hiding. You can also you a residual
aerosol like
D-FORCE HPX with a crack and crevice tip, enabling you to
get behind baseboards and corners of traveling paths of the silverfish.
This type of aerosol is very helpful in bathrooms where silverfish like
to eat the back of wallpaper.
SILVERFISH PAKS are designed to go
inside. These Paks destroy these year-round pests that eat wool, paper,
linen and cellulose materials. Place odorless, wafer-thin packets under
rugs, behind curtains, in closets and dark hidden places . Place away
from children and pets. Niban/Intice and Silverfish Paks both are
designed to attract the silverfish as they eat, functioning as long
term baits. If you do not know the exact location of the habitat of the
silverfish and cannot treat it directly, baits are ideal for silverfish
control.
***
Silverfish Paks is an excellent product to accompany a through spraying and/or dusting.
It is not advised as a stand alone treatment.