Bio-Tab®’s carefully constructed tablet form sinks to the bottom of your septic tank where build-up problems begin. While powders and liquids can wash over the surface with little effect, Bio-Tab®’s composition of enzymes and bacteria allows it to gradually dissolve to create a growing area of activity at the bottom of the tank that digests and liquefies organic waste. When Bio-Tab® is first added to the septic system, the tablet sinks to the bottom of the tank where there is little to no oxygen. This is where the anaerobic bacteria work best – in the absence of oxygen. Here they solubilize and dissolve the solids and sludge. The liquid then passes into the drain field to be absorbed into the ground. Once in the drain field, liquid waste is exposed to the air where aerobic bacteria, which works in the presence of oxygen, can continue the breakdown process. This allows the natural filter action of the surrounding ground to remain unclogged in order to naturally absorb and purify the waste. Because Bio-Tab® is able to establish itself by working from the inside out, using it will aid and support the natural digestion of waste, helping your septic system to successfully complete its role and maintain good working condition.