Question: are soap nuts safe for septic systems?
Answer: 8. Septic Systems—Soap nuts are anti-microbial therefore they help to break down the grey water in septic systems. There is no need to use the rinse cycle so half the water goes into the system. ... Ease of Use - Just make up one small cotton sac of 4-5 soap nuts and that will clean 4-5 loads of laundry.