Agreed, it is the same. Generally the spa packages are smaller. EPA or other governing body mandates packaging for either use, pool or spa. We sell 25lb - 50lb. dichlor for pools, and yes, some buy the bulk for spa use. But that's a WHOLE LOT of chlorine to have hanging around, being use up very slowly. Lots of chance to get wet---EXCESSIVE FUMING, do not store near a classic car or motorcycle---sucks the chrome right off!!!