It's easy, cheap, and can help prevent the spread of disease.
"You never know where these adventurous animals might pop up," New Zealand's conservation department said.
Missing this can lead to serious pest infestations.
The 64-year-old punched a bear and was bitten after the animal chased her dog out of the woods.
With temperatures set to peak at 30ºC, this heatwave hack is so important.