Dear Toby,

Yes, 1 dose.Wait and see. This will be only pallitive ; yet the 1 dose may cover a 'good' span. The problem is the repetitive use as a mosquito inhibitor. I surmise that she is not a 'smoker'; so there ought not to be any adverse effects from "calad", (increases itching).

It would be better if you prescribed for her as a totatality ; rather than just mosquito susceptability ,(though ,mosquito susceptability is a good guiding symptom; especially if VERY pronounced); And use "Sweet Basil" as an external inhibitor, (fresh 'rub', 'essential oil' dilute spray, or home-made spray from fresh plant).