A retail chief has warned against stockpiling as the Northern Ireland Executive implements a range of severe Covid-19 restrictions.
Demand for basic staples including rice, flour and toilet roll has risen following the announcement that schools and the hospitality sector are to be closed.
With no definitive end date to the latest measures and the possibility that further restrictions may be required to bring the virus under control, concerns are mounting that another full lockdown may be put in place.
Supermarket staff have reported that customers are concerned about possible shortages of goods and have been trying to bulk buy items over the past couple of days.
However, some retailers have already put in place restrictions in a bid to prevent the shortages seen during the first wave of Covid-19.
In one supermarket yesterday, a member of staff said she confiscated seven bags of rice from a shopper who wanted to buy a full crate of packets.
Aodhan Connolly, director of the Northern Ireland Retail Consortium, urged the public to only buy the goods that they need.
"There is absolutely no need to stockpile," he said.
"The supply chain remains robust but what will put pressure on the supply chain is if people buy more than they have to.
"We would ask people to think about others and only buy what they need to make sure there is enough for everyone.
"Here in Northern Ireland, we have a really good mix of retailers, we have some of the biggest and some of the best local shops as well, between them there will be enough to go around.
"We're asking people to take some personal responsibility, to think about others.
"For example, there's a wide range of products and sometimes, if people bulk buy, they go for the cheaper items which means that those people who depend on cheaper brands can't get them."
Stockpiling after the announcement of the first lockdown in March led to shortages of many products, with some of the most vulnerable people struggling to buy basic necessities.
There were harrowing scenes of pensioners walking down empty supermarket aisles unable to find any of the products they needed.
Some products, such as toilet roll and nappies, became extremely difficult to locate, with people selling or donating items to those in need.
In response, many retailers implemented restrictions on items, only allowing customers to buy three of any product in a transaction.
Meanwhile, Mr Connolly has urged the public to adhere to Covid-19 public health guidance when they are shopping, including observing social distancing, using hand sanitiser and wearing face coverings.
"Please don't put staff in the position where they have to tell you to follow the rules," he said.