Ty-D-Bol natural automatic toilet bowl cleaning tablets. Formulated with a combination of plant derived and DfE (EPA's Design for the Environment) approved ingredients to naturally clean and freshen the toilet bowl with every flush. Naturally cleans with the power of essential Tea Tree Oil. Naturally helps fight hard water stains and buildup. Freshens with every flush, formulated with a high performing fragrance that is detectable through the toilet bowl water. Continuous blue toilet water so consumer knows it's working and when to replace. Safe for plumbing and septic systems. Each tablet lasts up to 30 days. 2 tablet blister pack. No. 561001.2X6T: Size: 2 Ct., Type: Tablet, Life of Product: Up to 30 Days, Fragrance: Essential Tea Tree Oil, Pkg Qty: 2, Package Type: Clamshell