The Top 10 Common Pests and How to Control Them

Australia is home to thousands of pest species, and many of them find their way into homes and businesses every year. From destructive termites to disease-carrying rodents, pests in Australia are a serious concern for property owners in every state and territory. In Geelong and across Victoria, the combination of a mild coastal climate, established housing, and proximity to bushland means that pest issues are a year-round challenge.

This guide from Geelong Pest Control covers the 10 most common pests in Australia, how to identify them, and the most effective ways to keep them under control.

Termites

Why are termites the most destructive pest in Australia?

Termites are responsible for more property damage in Australia than storms, floods, and fire combined. Subterranean termites are the most common and most destructive species, and they are found across every mainland state. They feed on timber 24 hours a day, working silently inside walls, floors, and roof framing where damage often goes unnoticed for months or even years.

In Geelong, the mix of older weatherboard homes and newer timber-framed construction creates ideal conditions for termite activity. Signs to watch for include mud tubes along foundations, hollow-sounding timber, buckling paint, and discarded wings near windows.

The most effective approach to managing termite risk is an annual termite inspection carried out in line with Australian Standard AS 3660. If activity is found, professional termite treatments such as chemical soil barriers or baiting systems can help reduce the chance of further damage. Geelong Pest Control provides the full range of termite services, from inspections to long-term management plans.

Cockroaches

How do you get rid of cockroaches in your home?

Cockroaches are one of the most common pests in Australia and are found in homes and businesses right across the country. The German cockroach, Australian cockroach, and American cockroach are the species most frequently encountered indoors. They prefer warm, damp environments and are most active at night.

Cockroaches carry bacteria on their bodies and legs. They can contaminate food preparation surfaces, trigger allergic reactions, and worsen asthma symptoms, particularly in children. Because they breed rapidly, a small issue can quickly grow into a major infestation if left unaddressed.

Good hygiene is the first line of defence. Store food in sealed containers, keep benchtops clean, take rubbish out regularly, and fix leaking taps. For active infestations, professional cockroach control using targeted gels, sprays, and dusts applied to harbourage areas delivers the best results.

Ants

What is the best way to control ants in Australia?

Ants are among the most persistent pests in Australia. Black house ants, coastal brown ants, bull ants, and Argentine ants are all commonly found across Victoria and other states. They enter homes searching for food and water, and once a trail is established, the colony sends hundreds more.

A few ants on the kitchen bench might seem minor, but the real problem is the nest, which can contain thousands of individuals. Surface sprays may take out visible ants, but they rarely reach the colony itself.

Keeping food sealed, wiping down surfaces, and removing pet food after mealtimes helps reduce ant activity. For large colonies or recurring issues, professional ant control from Geelong Pest Control targets the nest directly, providing longer-lasting results.

Spiders

Are spiders dangerous in Australian homes?

Australia is well known for its spiders, and while most species are harmless, a few can deliver bites that require medical attention. Redback spiders and white-tail spiders are among the most commonly encountered dangerous species in homes across Geelong and Victoria. Huntsman spiders are large and fast but are generally harmless to humans.

Spiders tend to set up in undisturbed areas like garages, garden sheds, roof eaves, under outdoor furniture, and behind stored items. Regularly removing webs, reducing clutter, and keeping gardens trimmed back from the house all help reduce spider numbers.

For properties with high spider activity, a professional spider control service applies a residual barrier spray to external walls, window frames, and eaves. This treatment reduces spider populations and lasts for several months.

Rodents (Rats and Mice)

How do You know if you have a rodent problem?

Rats and mice are among the most damaging pests in Australia. The roof rat, Norway rat, and house mouse are the three species most commonly found in Australian homes and businesses. Rodents are particularly active during the cooler months when they move indoors seeking warmth, shelter, and food.

Signs of rodent activity include scratching noises at night, droppings in cupboards or along walls, gnaw marks on food packaging or electrical cables, and greasy smear marks along surfaces where they travel.

Rodents pose serious health risks. They contaminate food with droppings and urine, carry diseases, and can cause house fires by chewing through electrical wiring. Seal gaps around pipes, vents, and doors as a first step. For active infestations, professional rodent control from Geelong Pest Control uses a combination of baiting and trapping tailored to your property.

Wasps

What should you do if you find a wasp nest?

European wasps are one of the most aggressive pests in Australia. Unlike bees, they can sting multiple times and are attracted to sweet food, meat, and sugary drinks. They are most active from late spring through autumn and are a genuine safety hazard at outdoor events and around family homes.

Wasp nests are often built in wall cavities, roof spaces, retaining walls, or underground. They can grow quickly and house thousands of wasps. Disturbing a nest without the proper equipment is dangerous and should not be attempted.

If you spot a wasp nest on or near your property, contact Geelong Pest Control for safe wasp control and nest removal. Our technicians use specialised treatments to manage the colony and reduce the risk of stings.

Fleas

Why are fleas so hard to get rid of?

Fleas are a common pest in Australian homes, particularly those with dogs or cats. They live and feed on pets but also infest carpets, bedding, rugs, and upholstered furniture. Flea bites cause intense itching and discomfort, and some people and animals develop allergic reactions to the saliva.

What makes fleas difficult to manage is their life cycle. A single flea can lay hundreds of eggs, and the pupae can remain dormant in carpet fibres for weeks before emerging. This means you can treat visible fleas and still have a re-infestation days later.

Regular pet flea treatments from your vet are important. If fleas have established themselves inside your home, a professional interior spray treatment combined with thorough vacuuming and washing of pet bedding on a hot cycle is the most effective way to break the cycle.

Bed Bugs

How do bed Bugs get into Australian homes?

Bed bugs have made a strong comeback across Australia in recent years. They are small, flat, reddish-brown insects that feed on human blood, typically at night while you sleep. Bites appear as small, itchy, red welts, often in lines or clusters on exposed skin.

Bed bugs do not fly or jump. They spread by hitchhiking on luggage, clothing, and second-hand furniture. Hotels, backpackers, and even public transport can be sources of bed bug transfer. Once inside a home, they hide in mattress seams, bed frames, headboards, and cracks in furniture.

Bed bugs are notoriously difficult to manage without professional help because they can survive for months without feeding. If you suspect an infestation, avoid moving furniture or bedding to other rooms, as this can spread the problem. Contact Geelong Pest Control for a thorough inspection and targeted management plan.

Silverfish

Do silverfish cause damage to your home?

Silverfish are small, wingless insects that prefer dark, damp conditions. They are common throughout Australian homes, particularly in bathrooms, laundries, wardrobes, and storage areas. They feed on paper, cardboard, wallpaper paste, fabrics, and certain adhesives.

While silverfish do not bite or carry diseases, they can cause real damage over time. Yellowed pages, small holes in clothing, and chewed book bindings are all signs of silverfish activity. They are especially fond of stored boxes and old documents.

Reducing humidity in your home by improving ventilation and fixing leaks is the most practical prevention step. Storing valuable documents and clothing in sealed plastic containers also limits their access to food sources. For ongoing silverfish problems, a professional pest control service can target the areas where they hide and breed.

Mosquitoes

Can mosquitoes spread diseases in Australia?

Mosquitoes are a seasonal pest across most of Australia, and they are more than just a nuisance. In Victoria, mosquitoes can carry Ross River virus and Barmah Forest virus, both of which cause joint pain, fatigue, and flu-like symptoms that can last for weeks or months.

Mosquitoes breed in standing water. Common breeding sites around homes include pot saucers, blocked gutters, old tyres, birdbaths, and unused containers. They are most active at dawn and dusk during the warmer months, and properties near waterways or wetlands are at higher risk.

Removing standing water from your property is the single most effective step you can take. Using insect screens on windows and doors, wearing protective clothing during peak activity times, and applying repellent when outdoors all help reduce exposure.

When should you call a professional pest control company?

While basic hygiene and preventative steps can help with minor issues, some pests require professional management. Termites, rodents, bed bugs, wasp nests, and persistent cockroach infestations all need the expertise, equipment, and products that only a licensed pest control company can provide.

If you are seeing pests regularly, finding signs of damage, or dealing with a species that poses health or safety risks, it is important to act quickly rather than wait for the problem to grow.

Geelong Pest Control provides affordable pest control in Geelong for both residential and commercial properties across Greater Geelong, the Bellarine Peninsula, the Surf Coast, and surrounding areas. Our licensed technicians assess every situation individually and provide a tailored management plan that suits your property and budget.

If you are buying a home, a pre-purchase pest inspection can identify existing pest issues before settlement, saving you from unexpected repair costs.

Why is Geelong pest control the best pest control company in Geelong?

Geelong Pest Control is a trusted, locally operated business with a team of experienced, fully licensed technicians. We understand the specific pest pressures that affect homes and businesses across the Geelong region, from the coastal suburbs of Barwon Heads and Torquay to inland areas like Highton, Armstrong Creek, and Waurn Ponds.

We are committed to honest assessments, transparent pricing, and treatments that put the safety of your family, pets, and property first. Whether you need a one-off treatment or an ongoing pest management plan, we deliver affordable pest control in Geelong without cutting corners.

Frequently asked questions