The answer to this question depends on where you are and what kind of travel toilet you have. If you have a model with chemicals, these need to be emptied at a designated site. If you are at a campsite, emptying stations will likely be a short distance from the main area in a discreet location that has running water. If you are deep in the wilderness and have a bucket or a model that doesn't use chemicals, you will have to choose a location that is at least 100 feet away from trails, camps, and water sources so you can dig a hole that is at least 6 inches deep to bury the waste.