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Zep Septi-Pak Series ZSTP2 Septic System Treatment, Solid, Brown, Mild, 4 oz Pouch

Septi-Pak® concentrated septic treatment is a biodegradable formula that degrades and digests waste. It replenishes the essential bacteria that break down fats, oils, grease and organic waste. The easy-to-use concentrated formula is safe for pipes. Use one pre-measured bag once every two months for a 500 gal tank.

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