I live in Montgomery & shop both in Montgomery & Conroe – not too terribly far from you. I never did find the Fels Naptha either… but I did find Zote at Walmart in the Laundry section of the new Walmart in Montgomery. It has worked fine for me.
It was only .60 a bar. (I couldn’t bring myself to pay for shipping). I found the Washing Soda at Randall’s for 2.50.
Borax is everywhere – can’t remember what it’s cost was… hope this helps.