Thetford RV toilets are designed to be used with RV-specific toilet paper. This type of toilet paper is specifically designed to dissolve quickly and not clog the RV's plumbing system. While it is possible to use regular household toilet paper in a Thetford RV toilet, it is not recommended. Regular toilet paper is typically thicker and less likely to dissolve quickly, which can lead to clogs and damage to the RV's plumbing system over time. To avoid any issues, it is best to use RV-specific toilet paper in Thetford RV toilets. This type of toilet paper is widely available at RV supply stores and online retailers. When selecting an RV-specific toilet paper, be sure to look for a brand that is labeled as septic-safe, biodegradable, and designed for use in RVs.