A recent Grain Producers SA survey has shown local croppers found the double strength mouse bait more effective in combatting the pest on-farm.
Last year, Grain Producers Australia applied to the APVMA for another extension of the permit that provided access to ZP50 (50g/kg Zinc Phosphate) products.
This extension application - adjusted for minor use rather than the original emergency use purpose - was not approved however, and the permit expired on December 31, 2023.
To better understand dealing with mice in high numbers and baiting on-farm, GPSA surveyed grain producers throughout March and April 2024 and received 148 responses.
GPSA chief executive officer Brad Perry said according to their survey, graingrowers rated double strength mouse bait as 90 per cent effective, compared to the single dose at only 50pc effective.
"It is clear from survey comments that grain producers believe the double strength mouse bait is not only more effective than the ZP25 (25g/kg ZP), but also more efficient," he said.
"While mouse numbers are being reported as patchy across the state, many grain producers in the survey were concerned about timing of access to a stronger bait if numbers grew quickly."
Mr Perry said GPSA understood the importance of respecting the independent process of the APVMA and maintaining the integrity of that system.
GPA is continuing to work with and respond to the APVMA to explore options to allow the permit to be extended, so growers can access ZP50 products, to help them control, mice and protect their crops.
