One of the most common pest problems Melbourne homeowners face is rodents. Rats, mice and squirrels mostly fall under this category and are infamous for gnawing on wiring, insulation and stored food. These pose a significant health risk, as they carry pathogens linked to diseases such as leptospirosis and salmonellosis. Rodenticides, therefore, have long been the go-to tool for controlling infestations in homes and businesses.
In 2026, the rules around which rodenticides can be bought and used changed significantly. The Australian Pesticides and Veterinary Medicines Authority (APVMA) introduced new restrictions that affect how Melbourne homeowners can manage rodent problems at home. This guide explains what changed, why it changed, and what it means for anyone dealing with rats or mice on their property.
Understanding Rodenticides and Their Types
Rodenticides generally fall into two categories.
First-Generation Anticoagulant Rodenticides (FGARs)
These work more slowly. A rodent typically needs to feed on the bait several times before receiving a lethal dose. Because FGARs break down faster in the body, they carry a lower risk of building up in the environment.
Second-Generation Anticoagulant Rodenticides (SGARs)
SGARs were developed to be more potent. A single feed is often enough to deliver a lethal dose. SGARs stop blood from clotting, and death usually occurs five to ten days after ingestion.
The five active ingredients classified as SGARs are:
- Brodifacoum
- Bromadiolone
- Difenacoum
- Difethialone
- Flocoumafen
Because SGARs remain active in an animal’s body for an extended period, they are the main focus of the 2026 regulatory changes.
What Prompted the 2026 Rodenticide Regulations?
The APVMA began a formal review of anticoagulant rodenticides in November 2021, examining the risks these chemicals pose beyond the target rodent.
The core concern is secondary poisoning. When a rodent eats an SGAR bait, the poison stays active in its body well after the rodent dies. If a native predator, such as an owl, eagle, or goanna, eats that poisoned rodent, it ingests the chemical as well. Over time, this has caused illness and death in native wildlife that plays an important role in the ecosystem.
Domestic pets are also at substantial risk. Reports from animal poisons helplines linked a significant share of rodenticide-related pet poisoning cases to SGAR products specifically, reinforcing concerns about how easily these baits can affect non-target animals in a typical household setting.
After a multi-year assessment, the APVMA concluded that the current use of SGAR products presented unacceptable risks to non-target animals, including native wildlife, pets, and livestock.
What Are the Rodenticide Regulations of 2026?
The regulatory process moved through several stages between late 2025 and early 2026.
- 16 December 2025: The APVMA proposed suspending SGAR products and opened a six-week consultation with manufacturers and state and territory authorities.
- 10 March 2026: The APVMA certified that SGARs should be declared Restricted Chemical Products (RCPs), published in APVMA Gazette No. 5.
- 24 March 2026: The registration of all SGAR products was suspended for 12 months.
During this suspension, SGAR products can only be supplied or used according to the conditions set out in the Gazette. These conditions are enforceable under state legislation, including in Victoria. Key conditions include:
- Baits must be placed in tamper-resistant, secured bait stations.
- Use is restricted in areas accessible to children, pets, or non-target animals.
- Outdoor use is generally not permitted, unless in a secured station within 2 metres of a building.
- Bait use is limited to 35 days before the treatment must be reassessed.
- Carcass management procedures are now mandatory.
It is worth noting that this is a suspension, not a permanent ban. Declaring SGARs as Restricted Chemical Products is intended to limit their purchase and use to individuals who meet specific training and licensing requirements, rather than remove them from the market altogether. A separate, ongoing reconsideration process may bring further changes to how all anticoagulant rodenticides, including FGARs, can be used in future.
Products that are not anticoagulants, such as zinc phosphide, are not affected by this suspension.
How Pest Control Services Change After the Regulation
For licensed pest control technicians, the regulations introduce a more structured way of working. Bait placement now needs to follow strict station and location requirements, and treatments can no longer run indefinitely without review. A technician must reassess a rodent treatment within 35 days, which means ongoing rodent problems are tracked more closely rather than left on a set-and-forget bait cycle.
Carcass removal has also become a formal part of the process, reducing the chance of a poisoned rodent being found and eaten by a pet or native animal.
For homeowners, this means engaging a licensed technician is now the more reliable way to access SGAR-strength treatment when an infestation calls for it. A professional service can also apply FGARs and non-anticoagulant products correctly, in the right locations, and in combination with inspection and monitoring, rather than relying on a single bait application.
How Can Homeowners Help
While access to SGARs is now restricted, homeowners still have a role to play in reducing rodent activity around the property.
- Check any existing rat or mouse bait at home. If it lists brodifacoum, bromadiolone, difenacoum, difethialone, or flocoumafen as an active ingredient, it falls under the new restrictions.
- Seal gaps around pipes, vents, and foundations where rodents can enter.
- Store food, including pet food, in sealed containers.
- Remove clutter in garages, sheds, and roof spaces where rodents like to nest.
- Keep gardens tidy and reduce access to water sources.
These steps do not replace treatment, but they reduce the chances of an infestation starting or returning. For an existing or ongoing rodent problem, particularly one that has not responded to basic prevention, a licensed pest control service is the appropriate next step under the current regulations.
The Bottom Line
The 2026 rodenticide regulations are about a change to safer, better monitored rodent control everywhere in Australia, including here in Melbourne. Understanding the difference between restricted and available products, and knowing when a licensed technician is required, helps homeowners manage rodent problems responsibly while the new rules are in effect.
If you are dealing with a rodent problem at home, RF Pest Management can carry out a compliant inspection and treatment plan suited to your property. Contact us to arrange an assessment.
