I’m an ex-Trader Joe’s employee – the 10 things you should never do in stores and why you shouldn’t argue about products

TRADER Joe's employees are part of why people love shopping there.

However, the customers are not always right, according to an ex-employee.

The ex-employee has a list of things they wished customers would stop doing at the grocery store, they told .

Most shoppers appreciate the affordable prices, but some will try to barter with employees to get a better deal.

Employees have no say in prices, and the reason items may be more expensive is because of the cost of quality ingredients.

Arguing with a cashier about the price of chocolate-covered banana slices will just hold up the line.

Free samples are a staple in the stores, but that doesn't mean shoppers have to take each one.

If you sample an item and don't like it, simply throw it away rather than complain or try to give it back.

For those that do like the samples, make sure the waste is always thrown away properly. There's no need for the next shopper to see discarded spoons and cups on the shelves next to their favorite wine.

Finding trash around the store and in carts also makes it harder for employees to keep the store up to the standard shoppers expect.

Parking lots and stores may be smaller than shoppers would like, but berating employees about the lack of space is futile and dampens their day.

Shopping early in the morning close to opening can give shoppers extra room in the parking lot and shorter lines.

For shoppers who get caught in a long line, know that employees are trying to keep it moving and get everyone out as quickly as possible. Complaining or insulting the cashier makes it a bad experience for everyone.

Carts that aren't put back properly can make parking lots even smaller by taking up valuable spaces. Returning your cart to where it's supposed to be helps shoppers and employees alike.

On that note, shoppers hoping to get a week's worth of groceries done should avoid heading to TJ's near closing.

The night crew has to stay until every customer leaves. They could end up leaving much later than expected due to last-minute shoppers.

TJ's employees have no problem helping customers find items or bag groceries a certain way. Customers should remember to ask the employee rather than demand. A little kindness goes a long way.

Some of the signature snacks at TJ's have been discontinued, but arguing about it or yelling at an employee won't bring them back.

Finally, in most stores the morale is high and the employees are genuinely happy to be working. But if you see someone who isn't smiling, there's no need to point it out.