A former Kmart employee has revealed the shopping hacks every customer should see.

In a video titled ‘10 Kmart Secrets From A Former Employee’, which has already gone viral on YouTube, Rita Kaminski shares tips on how to nab the best deals and when the best times to shop are.

The 23-year-old, who worked at Kmart for four years, revealed the important reason why you should check your barcodes before heading to the checkout.

“The last digit on the barcode changes every new season,” she said.

“So if there are two toasters that look exactly the same and the last digit of one barcode is eight and the other is nine, the one with the eight should be cheaper.”

She added: “It has to be the same model, they just tweak the product and the price I found doesn’t come up straight away on the system.”

Rita also shared tips on how to trawl through the store to pick up a bargain.

“A lot of the stock will always change in price,” she said. “If it’s something that isn’t in the catalogue but it has been in the store for a long time, especially clothes, they can sometimes go on sale for as little as $1.

“There was a time when every single book was discounted to 20 cents. I bought about 20 books,” she revealed.

“So if you’re into flipping items make sure you keep checking clothes, books and makeup as well.”

She added that the best time to shop is between 8am and 5pm, when “the full-time and experienced staff members are working, so they are more able to answer your questions”, and that the clothing, books and makeup sections have the best reductions.

Rita also shared the best times during the year when you can nab a bargain.

“The best bargains are right after Christmas and after Easter,” she said.

“On Boxing Day there’s a whole section that drops down to between five cents and $5 but it is usually wiped out on Boxing Day by customers so it’s good to come in early.”

In between campaigns like “Back to School” you can also find products marked down across books, clothes, or appliances.

“It’s usually when a newer model/garment has been updated, fixed or isn’t selling,” she said.

“The price will drop down drastically but the item doesn’t really change by much.”

This article originally appeared on Over60.