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