[LewisM]

I have been Vitamin B12 deficient my whole life. As such, I get regular B12 shots and take B12 supplements. I NEVER have a single solitary issue with mosquitoes since starting on B12, nor midges/sandflies. They won't come near me.

Some say it's an old folk-remedy, but it works in my experience, not for want of trying though. I went off the B12 when my doctor said my levels were near normal. I noticed mosquitoes liked me again, so I have been back on the B12 now for 2 weeks, and no problems.