If the cache is left, perhaps filling it with many bottles of Tecnu (a soap which can be used with/without water, and is EXTREMELY helpful in washing off poison oak oils!!)?????
I have a bottle of Tecnu in my 'caching bag... a 4oz bottle costs a little less than $5, and is soooooooo worth it!! Actually, I was thinking of buying a case of the 4oz bottles and leaving it in a few "deserving" caches! :-)
As a seasonal firefighter in california (CDF), I also learned that the SMOKE from poison oak can cause poison oak "infection" (rash etc) *IN* the respiratory system. In fact, I think I'm starting to itch just THINKING about it!! :-(
