In a study presented at the Society for Experimental Biology conference in Florence on Tuesday, a team working between Uganda and Wales found mosquitoes seeking a blood meal were less likely to land on people wearing lotions made from catnip.

Dr Simon Scofield, a senior lecturer at Cardiff University, said: “We found that a 6% catnip oil was just as effective as Deet, and the 2% catnip oil was only marginally less effective than that.