Bio Friendly Drain Cleaner

Cooking up a pot of natural drain cleaner to eat away build up in one of our rentals while it/s empty.
7, 16 ounce bears, 5 pounds of sugar, 3 packs of baking yeast and a box of Rid Ex. I'll let it culture a day or two then our it down the furthest drain from the septic tank and four days of not running water the gunk will get mostly eaten away before I run a snake through it and no caustic chenicals to eat my pipes...
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