That's too bad it's affecting the cache hider in a negative way. People here can post all they want about "just let it go", but when someone picks on your hard work or messes it up it's annoying.
Each to his own. I prefer caches out in the woods. Snakes and bugs don't bother me and I'm not allergic to PI. Walking through a spider web still irks me though.
A friend of mine carries a little spray bottle of a 50/50 solution of water and rubbing alcohol and sprays himself down after each cache where he might have been in the PI. He swears by it.
If you break out all over your body suck it up and go to the doctor for a steriod shot and some prednisone tablets. It'll really knock it out!
You can get a good, used Garmin etrex model on ebay for around $50.
Also keep in mind that once you place a cache you must maintain it. Waiting a few months to see if you stick with the hobby would be my suggestion.
Try Googling "Markwell Pocket queries. There's also a pinned topic in the Getting Started forum.
I think the links are helpful. It points people in the right direction. Kit Fox is the master at that. It's called "Markwelling".