Q. What to do about dogs who lose all their housebroken-ness in the winter because they don't want to go out.
A. See a vet to rule out medical causes such as UTIs. Reinforce crate training (again if necessary). The crate should only be big enough to stand, turn around and lay down. They go out FIRST thing in the morning. Pick a spot outside and wait. No walks until they go. Praise and rewards should be given immediately afterwards. Once inside, they go back in the crate or on a leash on your hip so you can watch for cues to go. Take up the water 2 hours before bedtime and take them out right before bedtime. Be patient. Be consistent.