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MDR Headzyme Tabs represents the latest in toilet treatment. It uses enzyme-producing microorganisms to break down organic waste the way septic tanks do. No more spilling or measuring head chemicals-one tablet is good until holding tank is pumped or drained. The formaldehyde free tabs are environmentally safe and are not corrosive, caustic, or toxic. 6 tablets per package.
Uses enzyme-producing microorganisms not harmful chemicals
