Do you or any of your outdoor companions suffer from allergies? If so, try this to prevent allergies from ruining your outdoor experience - Honey. That's right - simple honey - bee spit, as my brother-in-law calls it. But it must be unpasturized AND local to the area you're visiting. As near as I can figure it, when you ingest local honey, which is made from local pollen, you're giving yourself a vaccination or booster shot of sorts which helps your body deal with the pollen that makes you miserable. I suspect that by injesting the local honey, your body does not consider the pollen that you breathe later in the day to be a 'foreign' substance. Anyway, every spring you should stop at one of the local roadside honey vendors and get a couple of quarts of local honey (with the comb in to chew, if you prefer). One tablespoon in the morning and one in the evening is all it takes. I don't know why you have to keep taking it, as I would think that once it was in your system, it would keep working. This is one 'booster' that is only short term.
Here's another health tip for outdoors for 'bug bites'. Carry a little tin of Garrett Snuff with you. Anytime you're stung by a wasp, hornet, fireant, bee, mosquito, etc., (as soon as possible) spit on the bite, and pour enough snuff on it to make a little snuff dough cake. It instantly takes the pain, itch, sting away, and in most cases it will be hard to locate where the little @#!*!% stung you within 10 or 15 minutes of application. Of course, this remedy is not recommended to replace the emergency injection medicine needed by those of you who have SERIOUS sting allergy problems. Also, it's a good idea to carry an anti-histamine (like Benadryl®) with you when you're outdoors if you get serious reactions to stings.