Attempts to desensitize people by giving them poison ivy by mouth or by injection were tried in the past but proved to be ineffective and potentially dangerous.
Püüab desensitize inimesi, andes neile mürki luuderohi suukaudselt või süsti olid üritanud ka varem, kuid on osutunud ebatõhusaks, ja potentsiaalselt ohtlik.