It’s not just toilet paper that the stores are cracking down on, though.
The restrictions seem to be decided by the individual stores rather than by Costco itself for now at least.
Why is Costco refusing to let people return toilet paper?

While this may seem extreme to some, such policies ensure that shortages don’t occur.
Instead, people are buying more than they need simply because everyone else is doing it.
“This can create real shortages because people buy more than they need.”
