Kash is just over 6 months old (he'll be 7 months old on July 8), and usually it just depends on how he's feeling that day. lol.
he's in his ex-pen all day while i'm at work (8-10 hrs). he has a pee pad, toys, crate, food/water. sometimes i'll come home and there will be no pee on his pad, and he'll just go potty outside for a really long time!
other times, there will be pee on the pad, but it's usually fresh, so i know i just missed him doing it. he holds it all night while we sleep.