Consider using a one or two gallons of 12% hydrogen peroxide as close to the drain field as possible. Hydrogen Peroxide is known to break down sludge and Bio-Mat and will not harm the bio system of the septic tank or septic field. Most people with "septic system" problems have a Bio-Mat...
Robic 57 is one of their best products. Also consider using a one or two gallons of 12% hydrogen peroxide as close to the drain field. HP is known to break down sludge and Bio-Mat and will not harm the bio system. Most people with "septic system" problems have a Bio-Mat problem!!!