Encountering lots of poison oak and poison ivy while geocaching. So went to Google, printed out photos of both plants and carry them when geocaching so I can avoid this dadgum stuff. Also carry soap and water in my car trunk for a quick wash down if exposed. If infected a product called Zanfel should help, it is sold at Rite Aid and Walgreens but is very pricey.
Follow up info (7-20-04): Researched Ask Jeeves on poison oak and poison ivy.
Result: I will be carrying a grease cutting soap such as Dawn, bottle of Isopropyl Alcohol and a jug of water in my car trunk. I wil also carry a packet of Isopropyl Alcohol wipes in my GPS pack for immediate treatment if exposed.
NOTE: Treat as quickly as possible after exposure, this is important. Remember to get photos of these pests and learn how to spot them, prevention is better than cure.
More Follow Up: Have been carrying an old mop handle as combination walking staff and bush poker (I'm 78 and need a little help walking on rough terrain). Works great for for pushing brush and branches aside instead of doing it by hand. Great also for prodding around suspected cache sites, those metal or plastic containers really sound off when poked lightly through brush.