Bah, I got to your question too late. I had just heard that permethrin/pyrethrin/deltamethrin (insecticide chemicals used by exterminators) is derived from Chrysanthemum flowers Monday night (on the show Verminators on The Discovery Channel, in fact).

A few drops of Frontline Advantage to the back of my neck once a month. Burns like hell for the first day or so but hey, no bugs for a month. Euclyptus oil repellent mostly. Of course you could always go the natural route and wear panty hose under your pants to keep the ticks from stickin to your legs and crotch. An army ranger told me that BTW.

I think that I would take the pantyhose over the pet stuff. Plus, you could peel the pantyhose off and use them to shine
your shoes. Or rob the local 711 (just kidding about that)...

ps: re use of panty hose. I walked the street of The Loop in Chicago long long ago with a young lady (NOT a street walker) in the dead of winter. For those of you who have not been to the Windy City in winter, it is COLD there. I wore a wool winter weight uniform, with long johns, she wore a pretty short skirt and panty hose. She appeared to stay warmer than I did. Maybe Broadway Joe had something there...

DEET in lotion like 3M Ultrathon is best. Here in Canada we have Watkins 28.5% DEET lotion (more than 30% is illegal here).

If you have to use both sunscreen and DEET, start by applying sunscreen and apply DEET lotion 30 min after. Then reapply sunscreen as need be. 3M Ultrathon works for about 8 hours.

Frankie

They call DEET a repellent but mostly it screws with the beasties sensors. Many times I have been out on a hot summer night near a swamp and watched the mosquitoes bump along an arm or leg. But they don't land or bite. I was told it screws up their ability to detect CO2 and your scent. They can still tell your warm but can't tell if your food.

A head net is a good idea. The place where DEET is the most uncomfortable is the face; around the mouth, makes everything taste like repellent; and around the eyes, where sweat carries it into the peepers. It isn't so bad on hands, neck and around the boot tops.

One thing about DEET. The higher the concentration the longer it lasts. 100% is good for at least eight hours and has some effect for twelve:
http://www.adventuremedicalkits.com/item_detail.asp?ID=0165-7030&series=10900

The 30% stuff is only good for two to four hours.

Also, if weight and bulk aren't too much of a problem, like when operating out of a vehicle or camp, consider any of the canned foggers. Working near a swamp if I stand in the middle of the work site and make a slow turn fogging it is quite remarkable how it cuts down on the numbers of critters in a 15' radius. The effect wears off after 12 hours but there is still a noticeable reduction in mosquitoes and gnat populations for 36 to 48 hours. I can get two or three such applications from the average can.

One of the regular problems around here are storms and hurricanes. In both cases the bugs come out full force. If you have been forced outdoors fogging the area makes it a whole lot more pleasant.

I keep a stash of original Deep Woods off @ 95% I save for special occasions.

About 15 years ago my dad picked up several cases of 100% (or close to it) Muskol. It was the best back then and it's the best now...he must have seen the writing on the wall. Even the military Ultrathon is only about 28% DEET.

Just as an addendum, there is more to consider about the duration of DEET repellent than just its concentration percentage. 3M Ultrathon and Sawyer Premium use a “controlled-release” mixture that releases DEET over a long period of time, so even though these use a “lower” concentration of 20–33%, they last much longer than regular DEET repellents.

Of course, you will also have to consider the environment you put yourself in when considering the duration of the repellent, for example, sweating, swimming, and rain.