I haven't read all the posts (running out of time gotta head to town) but I wanted to throw out an old remedy for intestinal parasites, which was told to me for dogs, but I think would work for just about anything: eat a pinch of tobacco every other day for a week. You might feel a little sick from it, but it's supposed to get rid of worms (if you aren't able to get some kind of medication, tobacco is always available). I've seen one dog go through the tobaccy treatment for a week and the worms stopped crawling out of his ass, so it seems to work.
And another random helpful tip: no bug spray, rampant mosquitoes? Eat the head of a match. I guess soldier's used to/(still do? maybe someone an confirm) do that in vietnam and other areas where there's masses of mosquitoes. The sulfur from the match head seeps out your pores, and a lot of people have tried to tell me that it must be absolutely terrible for you and that I'm retarded for doing it, but there's two bits of information that contradicts that: 1, I don't think sulfur is more dangerous than the chemicals people spray/rub all over their skin and 2, I've heard of plenty of hot springs with trace amounts of sulfur that are supposedly really good for you, BECAUSE of the sulfur. So anyway. Grain of salt, whatever, I've eaten match heads around SWARMS (this is an understatement) or mosquitoes and only got a couple bites.