Sebastian is only trained on the main level (I have a 3 level townhome). He still thinks the basement is his personal toilet
. So, he has free roam of the main level, but I still have to keep an eye on him and take him out really often or he will have the occasional accident. So, he gets crated when I'm doing something where I can't keep a close eye on him. His crate is actually more like a playpen. I got one for a really big dog and he has learned over time to not go potty in there. It's his little den and safe haven from my toddlers
. He stays in it mostly when I leave the house, and overnight to sleep. But, he also takes naps in there on his own (I always leave the door open for him). I am a softie though and always feel bad when I have to put him in there. At least he seems to like it.