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As a rule of the thumb, septic tanks need an anaerobic bacterial environment in order to do the work of digesting organic solids that enter them from the drains. The microbes will digest and break down the waste and reduce them to the sludge that settles at the bottom of the tank and which can be emptied every 1 to 3 years. However, the use of antibacterial household cleaning products ends up destroying the beneficial bacteria found in the septic tank and over the course of time; the septic tank will stop working completely.



When you have an ailing septic tank system at home, it finally begins letting solid waste to go into the outlet and after the passage of time, the absorption of the soak away or the drain field gets blocked completely. There are at least three things that you will be required to do when this finally takes place: you will have to install a completely new soak away; you will have the septic tank emptied regularly because of backups or you will have to add the beneficial anaerobic bacteria into your septic tank.

Option number one can be quite expensive https://drive.google.com/file/d/0Bwq31542MfibZ2JBVjVRUHE2bEE/view?usp=sharing

http://en.wikipedia.org/wiki/Septic_system

http://www.youtube.com/watch?v=nprwBsHB0Gs