Septic tank cleaning is a regular maintenance process. A septic tank is a device that treats and filters feces. Its principle involves solid matter decomposing at the bottom of the tank, with the liquid matter rising to the top and flowing out through pipes, preventing blockages. This allows solid matter (like feces and waste) ample time to undergo hydrolysis. A septic tank refers to a small treatment structure that separates and sedimentates domestic wastewater and anaerobically digests sludge.