If you make your own laundry detergent, you can't go wrong with Fels Naptha Heavy Duty Laundry Bar Soap. I have been making my own liquid laundry detergent for several years now and I've tried many different bars of soap as the base (including Ivory and Kirk's Castille soap bars), but none tops Fels Naptha for value and cleaning power. I also like the super-fresh scent of Fels Naptha, which permeates the entire batch of liquid laundry soap. An added bonus is that the Fels Naptha Heavy Duty Laundry Bar can be used to pre-treat stained clothing. That way, I don't have to keep a separate stain remover on hand. I just keep an extra bar of Fels Naptha near the washing machine and when I catch a stain, I rub the wet bar over the stain then throw it in the wash and launder as normal. Fels Naptha works like a champ to get even stubborn stains out. And ring-around-the-collar is no more on my husband's dress shirts! This is a powerhouse bar for a great value!