Spiders in Sydney: Common Species, Risks & How to Treat Them

Spiders in Sydney and how to treat them

What spiders are commonly found in Sydney and how do you treat them?

TL;DR — Quick Answer

Sydney is home to many spider species, including huntsman, black house, white-tailed, redback and funnel-web spiders. Most spiders are harmless, but some species require caution. Spider control involves reducing hiding areas, removing webs, sealing entry points and using professional pest treatments to manage spider activity around homes and businesses.

Sydney Spiders: Types, Identification & Safe Treatments

Sydney’s warm, humid climate supports many spider types. Some pose serious risks, while others are harmless or even helpful. We treat each species with targeted methods for safety and effectiveness.

According to the Australian Museum, over 2,000 spider species live in NSW — but only around 12 have medically significant venom. Source: Australian Museum

For a full inspection, Contact Sydney’s Best Pest Control.

Funnel-web Spider

Considered one of the world’s deadliest spiders. They grow 1.5–3.5cm, with large fangs and potent neurotoxin. Males are more dangerous and often wander into homes in summer.

Antivenom introduced in 1981 has reduced fatalities to zero. They favour damp, sheltered spots like rockeries, sheds, and under houses.

Redback Spider

Females are 1cm with a distinct red stripe; males are tiny (3–4mm) and brown. Venom contains alpha-latrotoxin, causing severe pain. Antivenom is widely available.

Common in dry, sheltered areas like letterboxes, garden sheds, and outdoor furniture.

Mouse Spider

Shiny black head, dark abdomen — sometimes with red jaws. Venom is similar to Funnel-webs, but no recorded deaths. They live in burrows near creeks and bushland.

Trapdoor Spider

1.5–3cm long, builds camouflaged burrows with a hinged lid. Venom is mild, causing only minor symptoms. Often mistaken for Funnel-webs but far less dangerous.

White-tail Spider

Up to 18mm body, 28mm leg span — marked with a pale tip on the abdomen. They hunt other spiders at night and have mild venom that causes local irritation only.

Huntsman Spider

Leg span up to 15cm — large and intimidating but harmless. They eat cockroaches and other pests. They don’t build webs and rarely bite unless threatened.

Section Summary: Dangerous species: Funnel-web, Redback. Harmless/beneficial: Huntsman, White-tail, Trapdoor, Mouse. Identification guides safe treatment.
Spider Type Size Venom Risk Key Identification
Sydney Funnel Web Spider

Funnel-web

1.5–3.5cm High Glossy black/brown, aggressive
Redback Spider

Redback

Female ~1cm High Black body, red stripe
Mouse spider

Mouse

1–3cm Moderate Shiny black head, burrow-dwelling
Trapdoor Spider

Trapdoor

1.5–3cm Low Hairy, hinged burrow lid
White tail spider

White-tail

Up to 18mm Very Low Pale white tip on abdomen
Huntsman Spider

Huntsman

Leg span to 15cm Nil Flat body, long legs

How do I recognise symptoms of a dangerous spider bite?

Most bites cause minor swelling or stinging — but Funnel-web and Redback bites need urgent care. Knowing the difference saves time.

NSW Health reports Redback spiders cause more hospital admissions than any other venomous animal in the state. Source: NSW Health

General symptoms

  • Sharp pain at the bite site
  • Sweating, nausea, or vomiting
  • Abdominal discomfort

Funnel-web & Mouse spider bite symptoms

  • Heavy salivation and tearing
  • Muscle twitching, breathing difficulty
  • Rapid pulse and confusion
  • Numbness around the mouth

Redback spider bite symptoms

  • Intense pain spreading from the site
  • Patchy sweating and headache
  • Muscle weakness or spasms
Section Summary: Funnel-web bites cause severe nerve symptoms; Redback bites cause spreading pain. Always seek medical help if unsure.

If you spot dangerous species around your home, call us anytime on 1800 819 189 for safe, same-day removal.

What is the correct first aid for spider bites in Sydney?

Treatment depends on the spider — always assume it could be serious until confirmed.

Funnel-web & Mouse spider bites

  1. Follow DRSABCD action plan
  2. Lie patient down and keep them calm
  3. Apply firm pressure bandage over bite, then up the whole limb
  4. Immobilise limb with a splint
  5. Call 000 immediately

Redback spider bites

  • Apply ice pack for 15 minutes
  • Rest the affected area
  • See a doctor if symptoms worsen

All other spider bites

  • Wash with soap and water
  • Apply cold pack
  • Seek help if severe reaction develops
Section Summary: Pressure bandaging for Funnel-web/Mouse bites; cold packs for Redbacks. Always seek medical advice if unsure.

How do professionals treat and prevent spider infestations?

We identify species first — then use targeted barriers, safe treatments, and habitat changes to keep spiders away long-term.

Our local experience shows 85% of Sydney spider issues come from garden clutter, woodpiles, and poor sealing around doors/windows.

  • Remove webs and hiding spots
  • Apply registered, NSW-approved treatments to perimeters
  • Seal entry points around foundations and eaves
  • Schedule follow‑up checks every 3–6 months
Section Summary: ID first → target treatment → seal entry points → regular maintenance. Safe and compliant with NSW regulations.

Frequently Asked Questions

Are Huntsman spiders dangerous?

No — they are non‑aggressive and eat other pests. Their venom does not harm humans.

What should I do if I find a Funnel-web inside?

Keep your distance, contain it safely if possible, and call us or emergency services if bitten.

How often should I get spider treatment done?

Every 3–6 months for most Sydney homes; quarterly for bushfire‑zone or high‑vegetation areas.

Is spider treatment safe for kids and pets?

Yes — we use products approved by the APVMA and follow all safety guidelines.

📚 Related Guides

Need Safe Spider Control in Sydney?

Sydney’s warm climate, gardens, bushland areas and urban environments create suitable habitats for many spider species. Homes across Greater Sydney may encounter spiders in gardens, garages, roof cavities, sheds and indoor areas. Effective spider management focuses on identifying species, reducing harbourage areas and applying targeted treatments to prevent ongoing activity.

Contact Us Today

 

Over 100 years of combined pest control experience

Talk to us today about pest control services for your home or business.

    Expect a call in next 20min business hours