She also has a recipe for bug repellent at that site with yarrow and essential oils. I have tried lemon eucalyptus and it works fairly well.
If you are already bitten you can pick a plantain leaf, chew it to a paste and put it on the bug bite for relief. Plantain doesn’t taste bad either.
Like some have said valerian stinks- like stinky feet even when you are digging it up to transplant. The flowers have a wonderful smell though- at least I like it.