Redback spiders are killed by specific insecticides, physical removal/web destruction (they relocate), natural predators like daddy long legs/white-tailed spiders, destroying their habitat, and thorough cleaning to eliminate food sources (other insects). For immediate results, spray them directly with a quality crawling insect killer, focusing on webs, cracks, and dark spaces.
Best Treatment for Redback Spiders
To control spiders in the home, spray Yates Long Term Control Barrier Spray. This product is designed to kill spiders on contact and provide a control barrier for up to 12 months indoors and 3 months outdoors.
For large infestations, you can use predatory mites to control red spider mite. In summer, once daytime temperatures in the greenhouse hover steadily around 21ºC, you can try releasing the predatory mite, Phytoseiulus persimilis on to your plants.
Spiders hate strong, pungent smells, especially essential oils like peppermint, tea tree, and lavender, as well as scents from citrus (lemon, orange), cinnamon, eucalyptus, and cedar, which disrupt their senses. You can deter them with DIY sprays using these oils mixed with water, or use plants like basil and marigolds, or even vinegar, though vinegar's effect is temporary.
Research on vinegar's effectiveness against spiders is limited, but some entomologists suggest that vinegar can be a mild deterrent. However, it is not generally recognized as a potent spider killer.
How to get rid of Redback Spiders
Spray directly on pests in your home. Spiders and wasps die in seconds; this is because Dawn allows water to penetrate their exoskeletons, thereby drowning the arachnid / insect in their own shell. The great benefit of this method is that cleanup is easy (it's just soap), and totally safe around pets and children.
Vicks VapoRub contains menthol, a strong smell that spiders may avoid.
Spiders do not like the aroma of coffee grounds. However, spent coffee grounds have been found to have properties that pests, such as ants, spiders, slugs, snails, and mosquitoes, hate.
Use a vacuum cleaner if you need to kill one or just a few spiders efficiently. Spider physiology is not strong enough to withstand the suction of most vacuum cleaners. The force will throw them against the tube or inner chamber of the machine, killing them almost instantly.
Redback spiders are attracted to warm, dry, sheltered, and undisturbed areas that offer protection and a steady supply of prey (insects, other spiders, small lizards). Key attractants include clutter, debris piles, outdoor furniture, letterboxes, sheds, and dark corners, especially where lights attract their insect food source.
The first one is to spray around your windows and doors with peppermint oil and water. Spiders dislike the smell of peppermint so it puts them off from coming in. They also dislike the smell of cinnamon so. in some cinnamon sticks around your home will keep them away too.
Depending on the extent of the infestation, they can spray their damaged and non-damaged plants daily, every couple of days, or weekly until the problem is gone. Dawn dish soap spider mite repellent is highly effective in eliminating spider mite infestation.
Many bites may be 'dry-bites' where no venom is injected, however a bite where venom is injected can be life-threatening for a small animal. Early signs in small animals include vomiting, diarrhoea, pain and restlessness.
In Australia, it is not illegal to kill huntsman spiders, but it's typically discouraged due to their ecological benefits. They help control pest populations by catching and eating insects.
You should never squish a spider because it can release dozens of baby spiders if it's a mother carrying eggs, attract pests with released pheromones, cause allergic reactions from its internal fluids, leave stains and odors, and you'd be killing a beneficial predator that controls other insect populations. Most spiders are harmless to humans, and squishing them can backfire, worsening pest problems or causing messes.
Spiders hate strong, pungent smells, especially essential oils like peppermint, tea tree, and lavender, as well as scents from citrus (lemon, orange), cinnamon, eucalyptus, and cedar, which disrupt their senses. You can deter them with DIY sprays using these oils mixed with water, or use plants like basil and marigolds, or even vinegar, though vinegar's effect is temporary.
Scientists have experimented with feeding spiders flies laced with different stimulants, and the results were eye-opening. When exposed to caffeine, the spiders spun some of the most erratic, disorganized webs ever seen—total architectural disasters!
I sweep instant coffee powder between the bricks on my verandah to deter ants. Coffee contains Limonene which is a natural insecticide. I also use cinnamon powder. I use roasted coffee beans in open topped jars inside my cupboards to deter ants and cover bad odours.
Fill a spray bottle with equal parts white vinegar and water. Replace the lid and shake well. Spritz in doorways, windowsills, corners and anywhere that is likely to house spiders in your home.
Spiders want to avoid human contact as much as people want to avoid spiders. So unless there is some sort of food source for them in or around your bed, spiders are not likely to come crawling on you while you sleep.
Studies show that peppermint tea repels mice and spiders, and it is completely natural and safe.
If you see a pest inside of your home, spraying them with Windex often means instant death. Windex can be very effective for spiders, and for killing large numbers of ants.
Bleach is considered a pesticide and fungicide because it kills bacterial cells, which makes it an option for spider control in your house. A few things to consider: Bleach can be dangerous, so be mindful where and when you're spraying.
Salt is a natural type of spider poison, so it makes an effective pest control aid. Dissolve an ounce of salt (1/8 cup) in a gallon of warm water, and pour the saline mixture into a spray bottle. Spray the salty solution directly onto a spider to kill it. Saltwater is also effective at killing spider nests.