I was thinking about buying a dog box with storage, was wondering if anyone has had any experience with the style that has the storage below the dog boxes, like does water get in the storage compartments in bad weather or cleaning out the dog compartments.
I had a custom deerskin dog box and storage box built that was designed this way. It was two piece system with a storage box on the bottom that was long enough for shotguns and other gear, and a the dog box mounted on top of the storage box. It was nice that way so if you wanted to move the dog inside out of the weather but still wanted them in a kennel. The box locked so you could leave your gear in it without worrying about it getting stolen.
As far as water getting in, I never really had this problem as the box was designed a certain way and I drilled drain holes so I could clean it out with a water hose and it would drain. But water never go it in it due to rain or anything like that. Contact Deerskin they can build anything you can think up.