I started making laundry soap a while back. The first batch I made was a powdered soap. It seemed to work fine, but it was more clumpy than powdery and I worried about its dissolving abilities in the washing machine. Though I never saw any spots or clumps stuck to any clothes or left over in the basin once a cycle was done. Either way, it wasn't cost-effective. It required the use of castille soap, while an awesome soap and multi-functional, is a little pricey. This new mix equals >$.05 per load. I'd say that's pretty damned frugal.

It's recipe #7 off the list. I only made a half batch to start. It was surprisingly simple. For some reason before making it I couldn't get my head around cooking soap; it just seemed like it would be so messy. I was, of course, neglecting to remember that it's soap. When I was done I just had to rinse. I grated half a bar of soap and dissolved it in water, but didn't boil. I had another pot of water heating on the back burner that I was adding to my bin while I was dissolving. Then I added some washing soda to the water until it was dissolved and added the soap mixture and stirred it all around. When it cooled we ended up with this awesome gel-soap. I feel like my clothes are cleaner and smell a little nicer too. That fresh smell is from the bar soap addition, I'm sure. Check back in a few more years and I am willing to bet I'll be making the bar soap that goes in here too.
