We've all heard and seen the stories about toilet paper hoarding at various stores.
Some Costco's have enacted a "1 per membership" rule on toilet paper purchase.
They also have a store person supervising the area.
Also in some Costco's are signs stating that returns will not be accepted on toilet paper, paper towels, sanitizing wipes, water, rice and Lysol.
This is also in an effort to stop hoarding. If you people know they can't return it the hope is they will only take what they need.