Last June, I wrote this post about a homemade laundry detergent recipe I was testing out. Turns out, it works just fine, but I found one that I like even better, and I've been using it ever since.
The recipe I've been using comes from Sew Much Ado, and it's really simple to make. Most of the ingredients can be found in your local grocery store's laundry aisle (or online), and they're inexpensive and good for the environment. I tend to double or triple the recipe. It lasts forever, smells nice, and effectively cleans stains. I highly recommend it:
1 bar Fels-Naptha bar soap
1 cup Borax
1 cup Washing Soda
1/4 cup Baking Soda
Grate the Fels-Naptha bar with a cheese grater. Pour the soap into a food processor and pulse a few times until crumbly (I sometimes skip the food processor step out of laziness, and it seems to work fine).
Pour all of the ingredients together and stir until well combined.
Use 2 Tablespoons per load.