The call comes from the House of Lords Environment and Climate Change Committee, which says spot-on treatments should only be sold by vets, pharmacists or other qualified professionals. Ms Gilmour began campaigning on the issue after being contacted by retired Exmoor vet and environmental campaigner Dr Ueli Zellweger. He raised concerns that fipronil and imidacloprid, two commonly used chemicals in flea and tick treatments, were entering local waterways. The House of Lords committee’s report, Paws for Concern: Pets, Parasites and Pollution, found little scientific justification for routine, preventative use of flea and tick treatments. Their findings support years of campaigning by the Exmoor Society and its Waters of Exmoor campaign, led by chair Kate O'Sullivan and president Sir Andrew Burns.