It is often grated and included as an ingredient inhomemade laundry detergent.

It is particularly effective in removingoily stainsandring-around-the-collar.

The benzene was removed from the laundry bar in 1964 when the company sold the rights to Fels-Naptha.

Fels-Naptha Soap in a basket of laundry

The Spruce / Candace Madonna

Use a kitchen grater to finely grate about 1 tablespoon of soap flakes per 1 gallon of water.

Submerge the Clothes

Rinse and Dry

Want more cleaning and organizing tips?

Yes, Fels-Naptha cuts through grease stains on a variety of materials.

Materials for using Fels Naptha in laundry

The Spruce / Sanja Kostic

There are many uses for Fels-Naptha soap.

ToxFAQs: Benzene.Agency for Toxic Substances and Disease Registry.

Lancaster pediatric associatesPoison ivy.

Mixing Fels Naptha flakes with ingredients in an air-tight container

The Spruce / Sanja Kostic

Grating a bar of Fels Naptha soap

The Spruce / Sanja Kostic

Adding Fels Naptha flakes to a tub of water

The Spruce / Sanja Kostic

Sorting laundry by color

The Spruce / Sanja Kostic

Submerging clothes in the tub of water

The Spruce / Sanja Kostic

Hanging wet clothing on a drying rack

The Spruce / Sanja Kostic

Preparing to add the washing mixture to the washer

The Spruce / Sanja Kostic

Grating a bar of Fels Naptha soap

The Spruce / Sanja Kostic