Where?

Where can I buy Fels-Naptha Soap, and Arm and Hammer Washing Soda?

I want to make some homemade laundry detergent, and most of the "recipes" call for Washing Soda. They used to sell Fels-Naptha & Washing Soda just about anywhere. I actually already use Fels-Naptha on stains, and am almost out. A bar lasts us almost a year. I have looked everywhere this last week, and have come up with zilch. Of course I could buy them online, but them you have to pay for shipping.

Where do I find these? I've looked at Safeway, Walmart, the Dollar Store, Target. Nothing. Next I'll try Albertsons and Haggens.