Toilet paper shelves are empty at a Save Mart supermarket during the Covid-19-Coronavirus emergency in Porterville. (Photo by Jeremy Hogan/SOPA Images/LightRocket via Getty Images) Grocers are looking to beef up their inventory ahead of the upcoming holiday shopping season and in preparation for a potential second wave of COVID-19.According to the Wall Street Journal, Associated Food Stores has recently started building “pandemic pallets” to ensure cleaning and sanitizing products are readily available in its warehouses to prepare for high demand through the end of the year.“We will never again operate our business as unprepared for something like this,” Darin Peirce, vice president of retail operations for the cooperative of more than 400.