Is it just overnight or anytime they're out of your sight throughout the day?
If it's overnight, they might just be used to being crated overnight and it might be too big a step to go to totally free roaming. Maybe try just an x-pen at first, then a small room, then work up from there.
If it's just soiling when they're out of your sight, are they male? In-tact? Are they marking or actually relieving themselves?
If they're actually relieving themselves they probably need to be taken outside more often and need to be praised profusely when they potty outside.
I go cahRAzy when a dog in housetraining goes potty outside. Not enough to scare him or her but enough to make their tail wag in exctasy! That might be what your smushy faces need. 🙂
Potty Training – Deaf Dogs Rock
Potty training a cat is all about strategic movements of the litter box. Potty training a dog is a bit more work, but since it frees you from having to take the dog outside, has a bigger payoff. With a little patience and some easy construction, you could be the proud owner of a fully potty-trained dog or cat.
How to Potty Train Your Puppy or Adult Dog - Rover Oaks Pet Resort
Get this: Your dog or puppy wears a diaper thingamajig with a sensor inside. If she/he starts to pee, it sounds an alarm, Puppalini stops peeing (unless she lets go completely in terror, who's to say?) and then you can "correct" her and take her outside to pee. Of course, after a few rounds with the "Potty Trainer," Puppalini might be too scared to pee at all, in which case the $169.95 (I kid you not) that you just spent on this nonsense will pale next to the amount of money you have to spend undoing the physiological and behavioral damage you've just wrought.
This goes double if your dog isn't yet potty trained.
Although most dogs are trained to , it sometimes makes sense to teach your dog to have an indoor potty area (newspapers, pee pee pads, litter box or turf box). This method is most commonly used by people with very small dogs, people who are unable to get outside easily due to health issues or living in a high-rise, and people who work such long hours that their dog can’t reasonably be expected to hold it and wait to go outside.Before you start training, decide where you want your puppy’s potty area to be. If at all possible, set up your dog’s papers, pee pads, turf tray or litter box where you want them to be long-term. Although not impossible, training him to use a new indoor area – and to stop going in the original area he was trained to use – is tricky, so avoid having to change the location of his papers, litter box, or training pads if at all possible. Putting your dog’s potty area in a room with linoleum, tile or other hard flooring is better than putting it on carpet, since there may be occasional overflow or misses. In the early phases of training, if your dog’s potty area has to be in a carpeted area, you may want to buy a linoleum remnant or waterproof plastic tarp to put under his papers or litter box, to prevent any overflow from getting to the carpet.