After a couple of weeks, toilet paper seems to be back with a vengeance in Irish supermarkets; there's heaps of the stuff. And canned tomatoes are back. The panic buyers seem to have given up on it, and have moved onto weirder targets. Based on my visit to Tesco last night, the new hoarding targets seem to be lightbulbs and chewing gum, for some reason.

Your supermarkets are probably restocking this stuff every day, and possibly multiple times a day, but it doesn't take much change in buying patterns to cause temporary shortages.