Grandma's, 2.15 oz, don't Bug ME pure soap bar, repels mosquitoes effectively without the use of deet or other chemicals, safe for kids, pleasant smell, won't stain clothing. Grandma's Poison Ivy And Oak Bar 2 Oz. Jewelweed stops the itching of poison ivy, oak, and sumac almost immediately and clears up the rash in 2 to 3 days. For centuries, Jewelweed, a rare plant, has been used as a natural preventative and treatment for poison ivy, oak, and sumac. Contains natural Impatiens Capensis, an excellent substitute for corticorsteriods. 2 oz. bar.