To keep your plants healthy, it is best to avoid soap with the following ingredients:
- Alkylbenzene
- Borax
- Boron
- Chlorine or bleach
- Peroxygen
- Petroleum distillate
- Sodium perborate
- Sodium trypochlorite
- "Whiteners", "softeners" and "enzymatic" components
In general, liquid soaps are better than powder soaps. For more information about soaps, see the Harvesting Graywater website.