Question to the Department for Environment, Food and Rural Affairs:

To ask His Majesty's Government, further to the Written Answer by Baroness Hayman of Ullock on 8 July (HL9038), what actions they have taken to reduce the environmental impact of pet parasiticides, particularly fipronil and imidacloprid.

We recognise increasing concerns about the environmental impact of spot-on parasiticide treatments for companion animals. Research funded by the Veterinary Medicines Directorate (VMD) has improved understanding of how substances such as fipronil and imidacloprid enter the environment, but further evidence is needed to address gaps around contamination sources, behavioural influences, and effective monitoring. To strengthen this evidence base, the VMD has launched a national survey to gather data on pet owner behaviours. In parallel, exposure modelling is being explored to support potential future regulatory decisions. These initiatives aim to safeguard animal health while reducing environmental impacts.

On 14 August 2025, the cross-Government Pharmaceuticals in the Environment Group convened its first stakeholder workshop on the ‘Appropriate and Practical Use of Topical Pet Parasiticides’, engaging a wide range of stakeholders from the companion animal sector. The workshop focused on developing educational messaging for pet owners on the correct use and disposal of parasiticides, which is now being refined and is expected to launch in spring. Additional measures to promote responsible parasiticide use were also explored and will be taken forward by other stakeholder groups, with the VMD helping to facilitate collaboration where appropriate.