If individuals want to automatically refuse foreign mail or block all mail from a specific sender, they must submit a written request to the USPS to withhold correspondence for up to two years.
1 liter = 33.8140226 US fluid ounces. 1 US fluid ounce = 0.0295735297 liters. Note that this is for fluid ounces, not dry ounces. A fluid ounce is a measure of volume, just like a liter is. A dry ounce is a measure of weight.
There are 35.195079 imperial (UK) fl. ounces in a liter, because 1 fl. ounce is 1.04084 imperial fl. ounce, and that makes 1.04084 * 33.814 (US fl oz in a liter)= 35.195079 imperial fl. oz in a liter. For example, to find out how many ounces there are in a liter and a half, multiply the liter value by the conversion factor, that makes 1.5 L * 33.814022 = 50.72 fluid ounces in a liter and a half. Liter is a metric system volume unit. Liter (litre in SI) is defined as the volume of one kilogram of water.