Dear Miller-Plante Inc:
I have two 500 gallon septic tanks that are very old. I have been using the Miller Plante, Septic Helper 2000 for Four years and no longer have odors. The water leaving the septic tank is running clear into the drainfield - looks almost like drinking water (although I wouldn't recommend drinking it!) Using Septic Helper 2000 has saved me a ton of money over purchasing retail products.
Testimonial from Diane F, Lacon IL
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