Chemical standards officer at Agriculture Victoria, Alex Perera, said people, livestock, pets and wildlife were at risk when mouse baits were manufactured illegally. 

“The temptation to make your own bait can be great, but this is risky and dangerous for you and the environment," he said. 

"It can lead to the accidental poisoning of pets, working dogs and native animals. 

“By using a registered chemical and following the label, people can be assured they are minimising any risks.”

Registered products for mouse control have been through a rigorous assessment by scientists at the Australian Pesticides and Veterinary Medicines Authority.

Mr Perera said the product labels would often contain specific directions on how to prevent off-target poisonings.

“There are also significant penalties associated with the illegal use of agricultural chemicals,” he said.

Department of Environment, Land, Water and Planning wildlife officer Glenn Smith said some reports of native bird deaths in the region from suspected homemade mouse bait were already being received.

“It is an offence under the Wildlife Act to destroy or interfere with protected wildlife, which includes our native bird species. Severe penalties apply,” he said.

“We’re working closely with Agriculture Victoria on this issue, but people need to do the right thing.

“Call 136 186 to speak to an Agriculture Victoria officer or a DELWP officer.”