The 12 hour thing was an exaggeration, my mistake. I'm only in school for 5-6 hours. But she has never had an accident while in the crate. And as soon as I get home I always run her outside. Some days I end up taking her out as many as 4-5 times. She goes every time. I try my best to read the signs. (I.E. sniffing around, usually she'll whine, scratch at bedroom door at night) but sometimes she just does it without any warning.