Principal: Soap and
water float the oil away, and destroy some of the allergen:
- Warn the people who handle your laundry. Contaminated
clothing should be bagged, or put directly in a washing
machine. Bagged clothing should be put in a machine without
being touched.
- Wash pets and horses. Dont touch pets that are running
free.
- Clean leather carefully. For example, use saddle soap.
Japanese and Chinese lacquers are allergenic.
Principal: Poison-oak belongs to the plant family
Anacardiaceae. About 30% of Anacardiaceae have poisonous sap.
This plant family is mainly composed of tropical trees. Among
them are the mango, cashew, pistachio, and Lithraea, a lumber
tree in South America.
- Sap
from the stems of mangoes is dangerous. Highly allergic
individuals should avoid the fruit. Less sensitive people
can choose mangoes that are free of depressed,
sharp-margined black urushiol burns. All authors recommend
discarding the peeling. Some authors additionally recommend
wearing gloves while peeling the fruit.
- Cashews are roasted to drive of the allergenic oil.
Inadequately heated nuts turn black.
- Pistachios are more weakly allergenic. Most people can
consume them without problems.
- About 30% of people in Paraguay and adjacent Brazil are
sensitive to oils in the wood used for making furniture
there, Lithraea. Thorough drying of Lithraea lumber,
followed by a coat of polyurethane, minimizes the problem.