The blue liquid in porta potties is a chemical deodorizer solution containing biocides, fragrance, dye, and surfactants.
The biocides kill odor-causing bacteria, while surfactants help break down waste.
The blue dye masks the visual appearance of waste and makes it easy to see when the tank needs servicing. Modern formulations are often formaldehyde-free and more environmentally friendly.
The solution is replenished during each service visit, typically weekly for standard use.
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