Meadow Springs - All Natural Septic Tank Maintenance. Unlike other products available for septic tank maintenance, Meadow Springs lets you avoid having to handle bacteria or potent chemicals. Meadow Springs introduces no toxic chemicals into your leach field; Meadow Springs uses Eco-Yeast to stimulate the bacteria already contained in your septic system. This natural reaction will help maintain your septic system without dangerous chemicals. Eco-Yeast is blended with other natural enzymes that enhance the ability to activate bacteria to break down solid waste that can impact the performance and life of your septic tank.