There is no expiration date on the Rid-X dry package.

How long does Ridex last?

If I use RID-X®, will I still have to have my septic tank pumped? Yes, the average recommended time between septic tank pumpings is 2–3 years, depending on the rate of sediment build-up, family size, and other factors. Used regularly, RID-X® helps break down the solid waste in your septic tank.

Why you shouldn't use Rid-X?

Rid-X contains a much stronger form of enzymes than the natural bacteria found in a healthy septic system and, as a result, solids are broken down further than they normally would be.