At least this is how it works around here: Female: dainty and quick. She gets in there, does her business, covers it up, and leaves. In and out. Male: litter is flung everywhere as he digs his way to China. Spends the next 10 minutes wiping his front paws on each corner of the box. Personally I think the female is so quick about it because she fears being "trapped" in there by the male cat. She absolutely refuses to use a litterbox with a dome on it.