Hello @Charles Gropman,
I am a human doctor, not a vet, and my advice should be checked by a vet. However I understand that it will start to have an effect at an average of 5-10 minutes, shorter if your cat is smaller.
With all best wishes,
Geoffrey
I am a human doctor, not a vet, and my advice should be checked by a vet. However I understand that it will start to have an effect at an average of 5-10 minutes, shorter if your cat is smaller.
With all best wishes,
Geoffrey