When the novel coronavirus COVID-19 outbreak began spreading beyond China, US shoppers rushed to stock up on toilet paper.br Now, a supply chain expert says there's going to be a huge surplus of toilet paper soon when consumers stop panic-buying.br Toilet paper manufacturers have ramped up production to meet the unprecedented demand.br But according to Business Insider, they may be left with a huge supply once customers realize they've got months worth of product stockpiled.br Patrick Penfield is a supply chain management professor at Syracuse University. He says the glut is a matter of 'when,' not 'if.'br Penfield said in the coming months that demand will subside and manufacturers will be left with huge surpluses of toilet paper and cleaning products.