What To Never Do At Trader Joe's

Business Insider spoke with current and former Trader Joe's employees to learn the worst habits of their customers.
Don't ask two different employees to look for the same item.
Don't leave sample cups or trash around the store.
It's rude not to greet employees when they greet you.
It's annoying to put products back on the wrong shelves.
Try not to leave carts at the register.
If you want to sample a specific food, don't open the item yourself. Please wait for a staff member.