The Walex Bio-Pak Natural Black Water Enzyme Drop Ins are the perfect solution for your RV or marine holding tank. This 10 pack of BIOPPBG drop ins helps to break down waste and tissue, reduce odors, and keep your tank clean and fresh.

• Breaks down waste and tissue
• Reduces odors
• Keeps tank clean and fresh
• Ideal for RV and marine holding tanks
• 10 pack of drop ins
• Easy to use
• No biocides, formaldehyde, zinc, or copper and with Alpine Fresh scent
• Treats up to 50 gallon holding tank
• Compliant with California environmental regulations