Earth Right Super Stuff® improves soil texture in your drainage field, adds beneficial microbes and restores proper system operation. Better than enzymes alone, Earth Right’s unique formula promotes improved percolation. You may apply Earth Right to the drain field and down the tank. The number of applications depends upon the soil conditions and the amount of septic system users in your household. Call or email for specific directions. Do not use if your system has old, unglazed drain tiles. Most systems have plastic tiles unless they are older.