Fabric softeners should not be used in a septic system.
Fabric softeners coat the surface of a fabric with chemical compounds that are electrically charged. Added to the rinse cycle these products add many unfriendly chemicals to the septic tank including beef fat, corn oil etc.
Add beneficial bacteria with EcoEthic Septic Treatment. It contains waste digesting microbes including those that breakdown fats, oils and grease, and improve your septic system function.
For more information on how septic systems work, please go to the EcoEthic Septic Treatment page and scroll down to watch an excellent video and down load additional information.