Your great grandmother likely had a bar of Fels-Naptha handy. Its quality is apparent since it is still on the market today. Old-timers use it as a laundry stain remover and pre-treater, a general laundry soap, or to wash off poison ivy resin after contact. Our customers tell us they still use it in the laundry, and as a general cleaner for floors, tubs and showers. Each bar 4-3/4" x 2-1/4" (5-1/2-oz). USA made. Ingredients (as listed on package): Cleaners, soil & stain removers, chelating agents, colorants, perfume. CONTAINS NO NAPHTHALENE. Made in USA.