
Spiders are considered a beneficial insect because
of their prey to other insects and many people do not consider spider
control measures for most spiders.
However their are two North American species that
are dangerous to humans: Black
Widow Spiders and Brown
Recluse Spiders, and should consider spider control.
Most spiders are
harmless, but we do include recommended treatment and products for general
spider control at the end of the section.
BLACK WIDOW SPIDERS
The female has a shiny black, globular abdomen with two yellow
or red markings in a triangle shape. It looks like an hourglass. Males
are smaller, lighter in color, with light streaks on the abdomen. The
web is irregular, many times found along exterior foundations on slabs,
under stones and rocks, behind shrubs .They usually don't enter structures
.They will bite if provoked. The bite feels like a sharp pain ,like
a needle puncture. After 15 minutes to an hour there will be muscular
cramps. Bites are rarely fatal, but you should seek medical attention.
For recommended spider control for the Black Widow Spider
see Spider Control Measures
Click on the picture:
For more information on black widow spiders.
BROWN RECLUSE SPIDERS
The body is yellow to dark brown, with the body size of 1/3-1/2
inch long. Combined with the legs it could be about 1 inch or longer
in diameter .The dorsal has a dark brown violin shaped marking, very
distinctive. Their web is off white to Gray .They can be found outside,
under rocks, debris, wood piles, etc. ,but many times they are found
inside.
Brown Recluse spiders can be found in storage areas like closets, basements, attics,
garages and cellars. Sometimes they can be around above the ceiling
duct work or register. Many times people get bit by putting their
hands or feet in something that has been in storage. You should always
wear gloves when handling debris outside the home The initial bite
is not intense, but poisonous. After 8-12 hours, the pain is more
intense, and over the next few days large sores form leaving a disfiguring
scar. You should seek immediate medical treatment after the bite.
For recommended spider control for the Brown Recluse Spider
see Spider Control Measures
Click on the picture:
For more information on brown recluse spiders
Recommended Pest Control Measures : Spider Control
Recommended insecticide residual products for spider control are:
Cyonara 9.7 will not leave a powdery residue that can be seen on dark surfaces such as the Demon WP or Cyper WP, which are wettable powder formulations.
Spray around all entry points
like doors and windows, sprayed along baseboards, indoor plumbing connections, in the basements and
garages, and sprayed in the upper corners where they may web.
It is also suggested to use Cobweb Eliminator every two-three months to prevent further cobwebs.
*Also recommended for spider control is an aerosol such as D-Force
HPX with a crack and crevice tip , applied along baseboards, to window
and door frames, corners, pipes and other areas where spiders may crawl.
Using
Drione
Dust, or Delta
dust dusted in the attic area would be a good measure for
spider control if there is an infestation in the attic area. Handy
dusters for the attic area would be either the Dustin Mizer or
BG Electric Duster
Spider Control Products | Recommended Spider Control
Measures | Black
Widow Spiders | Brown
Recluse Spiders |