I have always wondered about catnip. Here is an excellent explanation.
Catnip has quite the reputation with cats, but did you know that according to scientists, only 50% of cats are susceptible to its influence. Rom was not part of that 50%, which made it nearly impossible to ‘calm him’ to go to the Vet.
The good news is that catnip is 10 x more effective than DEET as an insect deterrent, but is not harmful to your cat.