If you think you have a problem with Spiders
call Redback Pest Control Sydney now on 1800 733 222 for expert advice
Spider Control
The method which our company controls spiders relies upon:
- Knowledge of spider biology and
- Your awareness of how our treatment works
Female spiders may reproduce up to 300 spiderlings per hatching 2 or three times per year, depending on their species. The spiderlings (baby spiders) are then distributed en masse on gusts of wind on parachutes of web, or crawl to their new home. When we treat your home, we pay attention to all the potential spider harbourage areas including webs.
Spiders that we contact with the spray will definitely die after a short period of time, ranging from just a few hours up to a couple of weeks.
It is not our aim, nor is it possible to eliminate all spiders on your property. Spiders play an important role in our food chain and it is much more environmentally responsible to concentrate on keeping spiders from entering your home.
No pesticidal residue that is available on the market today will kill spiders when they crawl over it. What will occur though, is a reduction of the spider population in your area.
WE CANNOT ELIMINATE ALL SPIDERS ON YOUR PROPERTY OR GUARANTEE THAT WEBS WILL NOT RE-APPEAR AFTER TREATMENT.
What we can guarantee is that all potential harbourage areas will be treated and spiders will die after being contacted with the spray.
Q. How can I reduce spider populations safely around my home?
A. By regular treatments spider populations will be reduced to more bearable numbers. Be aware that spiders may become more active after spraying and check boots and clothes on the washing line before wearing.
A good idea after about one month after having your home treated is to vacuum away webs with a vacuum cleaner. This is a safe way of cleaning up spiderlings which may not have been contacted by the spray.
SPIDER FACTS
Spiders have been on earth for about 300 million years and they haven’t changed very much. They didn’t have to. They were and still are very successful at what they do.
What is a spider?
A spider has two sections to its body with a waist between. It has four pairs of walking legs. Usually six to eight eyes and no antennae or wings. They make and use silk webs. They can inject poison and suck up liquid.
Silky webs
One of the reasons that spiders have been so good at what they do, is that they use their webs in many different ways. (By the way, spider webbing is twice as strong as steel, weight for weight!)
Baby spiders, or spiderlings can use trailing webs to travel to different areas, like parachutes.
Most female spiders use their webs to catch their prey, such as flies, mosquitos or other small insects. Male spiders use their webs for mating.
Methods of Catching Prey
The main method of catching prey is by stretching a web across two or more points of anchor and waiting for flying insects to become ensnared. More ingenious methods include:
- The Mouse spider uses a double sided trapdoor and springs out to grab any prey that wanders too close. The Brown trapdoor spider can hold shut its burrow lid with a force equal to 140 times its own weight!
- The Angler spider sits on a tree branch and uses a line of web with a sticky globule on the end. She uses this by spinning it in circles and fishes for her supper
- Many kinds of Jumping spiders make use of their very powerful forelegs to pounce upon their prey
- The Net Casting spider uses a webbed net which is thrown by the first two pairs of legs over its prey
- The Ant-Mimicking spider fools ants into thinking that he is one of their own kind by keeping one set of legs tucked in. Any dawdling ants pay the price by becoming a tasty meal
First Aid Treatment of Bites
A pressure bandage is used for Funnel Web bites, applied between the bite and the torso. This is used to slow down the movement of the venom. A plastic bag filled with water and a little ice is best for Red-back and other spider bites because it is a much slower acting venom.
Caution! Do not apply a pressure bandage to Red back spider bites as this will only increase the pain.
SPIDER INFORMATION SHEET
Biology: All spiders belong to the class Arachnida, have eight legs and two body sections; the cephalothorax and abdomen. The cephalothorax is a combination of a head and thorax found in insects. Palps (sensory organs) and fangs are at the front of the body.
Sexual Identification: The easiest features to identify spiders of the same species is the difference in body size. The male is usually much smaller, with slender body and longer legs and palps. The males do not usually spin webs except for mating purposes.
Respiration: Spiders breath through tiny holes in the sides of their bodies (Spiracles) and/or lung books. These allow air to be taken in and conveyed through small tubes directly to internal organs. Always seen on the ventral surface of the abdomen, lung-books can be seen on the Sydney Funnelweb spider as prominent orange-red plates behind the junction of the legs with the body.
Senses: Most spiders have three or four pairs of eyes, on the top and sides of the Cephalothorax. Each eye is a simple lens. The arrangement of the eye patterns makes an identification process for families and genera. The bodies of spiders and other arachnids are covered with spines used for touch and taste. They can even hear through spines on their legs!
Reproduction: Courtship of spiders is usually protracted, mostly by the male. This involves gently stroking the female with his pedipalps when in close range. Web spinning spiders drum on the threads of the web, as in a serenade. The female spider seems to be intoxicated by all this attention and becomes inactive.
The male reproductive organ is located in the pedipalpi and conveys seminal fluid to the spermatheca of the female. After fertilization, the male is often caught and eaten by the female, ensuring that she is well nourished and a caring mother.
Life Cycle: The egg sac of the fertilized female spider is a round tough mass of silken threads enclosing hundreds of eggs. The eggs hatch inside the egg sac and the young spiders (spiderlings) moult before they emerge. Once emerged they are dispersed by ballooning in the air by producing a thread which is carried by the wind. They go through a succession of moults until they reach adulthood. Any limbs that are lost during moulting or fights with other spiders are replaced by new ones.
Their life cycle is usually less than 12 months for webbing spiders, but some ground-dwelling spiders may have a life cycle of many years.
Dangerous Spiders: There are nine Australian Spiders whose venom ranges from extremely toxic to resulting in painful bites. Common sense and awareness will safeguard most people from the danger of attack. These spiders are as listed below:
- SYDNEY FUNNELWEB-(MALE) The most dangerous spider in the world is the male Sydney Funnel Web. It has killed three children in under two hours. This spider is quickly identified by a glossy black body with long spinnerets. An aggressive spider which rears up when challenged. His venom is seven times as toxic as the female, yet is dangerous only to primates. Secondary identification is a pointed spur on each second leg and reddish black undersides.
- SYDNEY FUNNELWEB-(FEMALE) Similar in appearance with a stockier body than the male. Lives in web-lined retreats in moist, cool locations. The female although less toxic than the male, has caused fatalities, mainly amongst the young, old and sick population.
- RED-BACK This spider has a pea-shaped abdomen with a characteristic red or orange stripe. The male is much smaller and harmless. Makes untidy webs around rubbish and pot plants. Poison is much slower acting than the Funnel Web and bites causes severe pain with localised sweating. Is related to the Black Widow spider of the U.S.A. and the Katipo of New Zealand. Around 300 spider bites are recorded every year from the Red-Back with seven fatalities attributed.
- MOUSE SPIDER Females often mistaken for Funnelwebs. Large glossy black bodied spider, with the male having a red forepart of the cephalothorax. Female lives in holes with double doors in the ground. Has blunted spinnerets and strong jaws. Toxic and painful bite.
- WHITE TAILED SPIDER A small dark brown spider with a characteristic white spot on the end of the abdomen. Usually encountered inside houses sheltering from the weather or introduced on clothing brought in from the clothes line. Bite is not usually painful, though may become very painful at a later stage. Ulcers may develop to a stage where necrosis of the skin occurs.
- BLACK HOUSE SPIDER Both sexes are dark brown to grey/black with body markings. Builds webs in dark corners of windows, verandahs, sheds or fences. Bite very painful with severe vomiting and nausea resulting. No fatalities recorded.
- WOLF SPIDER Mottled grey and brown body with Union Jack appearance on cephalothorax. Carries young on its back. Makes web-lined holes in the ground. Moves rapidly when disturbed. Bite may be toxic and painful for a short while. Ulcers from bite suspected of developing necrosis of skin.
- BROWN TRAPDOOR Brown to dark brown covered with fine hairs. Leggy spider with male having “Boxing glove” palps. Does not usually leave lid over hole. Painful bite.
- HUNTSMAN Grey to brown spider with large very leggy body. Lives under bark during day and emerges during night. Walks sideways on occasion. Non-toxic and rarely bites. Is known to hide under sun-visors in cars.
Are YOU concerned about Spiders? Why not call Redback Pest Control on 1800 733 222, or email us for more help. See our custom Spider Chart for more information too.
