4 DIY Laundry Detergent Recipes | DoItYourself.com
3. Laundry Soap. To make DIY laundry soap, you will need washing soda, borax, bar soap, a 5-gallon bucket and access to hot water. If you like, you can choose a bar soap with a scent, like lavender or peppermint, to add a little fragrance to the detergent. Again, begin by grating the bar soap, or using a blender to create a finer powder.