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We use Members Mark from Sam's Club. Never had a problem. We are full time RVers. I flush out my tank every week and add the RV tank additive to help break down the toilet paper and keep the smell down. I have a clear piece on my dump so I can see when It's clear.
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2017 Montana 3820 FK
2004 Dodge Ram 2500
2009 Harley Davidson Ultra Classic
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