Wild rodents present risks for farm animals and pets alike. They can spread pathogens, contaminate food and chew electrical wires. But because the newest rodenticides have no antidotes, they can actually increase risks to other animals and people. So what can be done?

Since the smallest rodents can squeeze through a one-quarter inch gap, start by blocking holes that size or larger. Next, transfer foods from paper or plastic bags to sturdy closed containers, and make sure their lids are securely shut after each use. Clean often to keep an eye out for rodent droppings and nesting sites while destroying migrant pathogens. And check foods routinely for signs of gnawing or other forms of contamination, which should prompt you to stop feeding that item.

In short, thinking like a rodent can help you stop one in its tracks.