If you have come into contact with poison ivy, poison oak, or poison sumac, place exposed clothing into the washer before showering. Normal laundry detergent may remove the residue from clothing. However, for those with extreme allergies, rub a bar of Poison Ivy Soap across a cheese grater (don't use it for cheese after this) and put the soap flakes into the washing machine with the contaminated clothes. Remember not to touch your towel until after your shower. The ingredients in our Poison Ivy Soap are safe enough for preventative daily use