Widely varies based on what I eat, if I use Immodium, if I"m really busy. Generally maybe 4-6 times a day. But if I take Immodium and am busy, I can go 6 hours or more without emptying. It was more in the beginning. Over time I noticed it became less. But really, with how much I drink to stay hydrated, I pee a lot, and if I'm already in the bathroom, I usually just empty whatever is in the bag then. So I don't really pay attention...