Black Tank odor - gone.
clicky Product Features Non-corrosive. Essentially non-toxic LIVE ACTION bacterial formula Certified free of gram-negative bacteria (i.e. salmonella and shigella) Eucalyptus odor counteractant Dig...
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I haven't used the same product as OP but have used one with the same properties. Worked well even when I had to leave a tank nearly full tank for months.
