General Discussion
In reply to the discussion: Please stop buying big plastic bottles of laundry detergent [View all]ProfessorGAC
(77,545 posts)Not on the environmental issues. They could sell detergent in paper cartons, and paper is highly recyclable.
But, soap is a poor substitute for a properly formulated laundry detergent.
Soap is a poor surfactant for protenaceous soils & is, at best, equivalent on oil-based soils.
It's notoriously poor in hard water, and the hardness precipitates don't rinse well during that cycle. Then, using a fabric softener doesn't help because any metathetic reaction will leave behind the fat from which soap is made.
There's a huge chemical difference between soaps & detergents. The physical chemistry of the soil removal is a minimum of 5x more efficient using chemistry-derived surfactants.
Oh, and synthetic surfactants are actually more readily biodegradable in municipal waste water treatment sites.