Clog-resistant Camco RV Bathroom Tissue dissolves fast, making it ideal for use in RV and marine sanitation systems. It's also biodegradable and septic-tank safe. Contains no dyes or perfumes. 2-ply thickness. Manufacturer model #: 40278. Clog-resistant toilet paper; Biodegradable; Septic-safe; No perfumes or dyes; 2-ply strength;