Keep your RV black tank cleaner and fresher with Camco's TST MAX Drop-INs. These RV septic tank treatments are specially designed to eliminate odors, break down waste, and ensure top performance in RV and marine tanks. TST MAX RV toilet pods are designed to be safe for your septic tank and the environment. The ultra-concentrated formula offers a sustainable solution for your RV toilet treatment needs. Convenient and powerful, each Drop-IN treats up to a 40-gallon tank for seven days of odor prevention with just one application. Trust Camco's USA-made TST MAX Citrus Drop-INs for a fresh and odor-free tank on all your travels.