Optional step: if you want a finer texture, you can run through the food processor or blender.
To Use:
Add 1-2 tbs of detergent to each load.
Notes
If you find your laundry detergent is not dissolving well for you, there are a couple of simple things you can try. First, try washing the clothes in warm or hot water, as the heat can help the dissolving process. Another option would be to pre-dissolve the detergent in hot water before adding it to your load of laundry.
Use laundry balls as a natural fabric softener alternative. Laundry balls help air circulate in the dryer by separating tumbling clothes and working to prevent wrinkles. The contact the dryer ball makes with the clothes naturally softens them, leaving you with a pleasant and gentle feel. If you're set on scented laundry, you can experiment with adding a few drops of essential oils to the wool dryer balls when you toss them in.
You can add a bit of vinegar to the load, which also can soften clothes. Vinegar is a natural cleaning agent that deodorizes and removes stains. It is also eco-friendly and doesn't harm your washing machine.