Is Liquid Plumber Safe for RV Holding Tanks? The Truth You Need to Know

You just got back from a weekend road trip, and now your RV’s black water tank won’t drain. Frustrated, you reach for that familiar blue bottle: Liquid Plumber. It worked wonders on your kitchen sink—why not here? But wait. Is Liquid Plumber safe for RV holding tanks? The short answer: Not really. And using it…