Any leftover tater tots can be stored in an airtight container in the refrigerator for up to 3 days. They may become soggy tater tots if you store them when they're still hot, so be sure to let them cool. They will most likely need to be reheated to get nice and crispy again. I recommend using the air fryer to reheat them and bring them back to the crispiest tater tots with that incredible crunch that you know and love!