grandma's pure & natural poison ivy bar & don't bug me bar grandma's soap 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.