I'd rather see them kenneled. Those heavy chains take their toll over the years.

Obviously they are in good physical shape, but what do they have to bond with when isolated 23 hours a day? Its primitive to think animals have no feelings and emotions, just as we used to think animals couldn't see color until recently when we figured out they have rods and cones in their eyes.

Another thought, what if you get in a car crash and die? Who's going to want to adopt an un-houstrained dog? How will 20 dogs not housetrained find homes? You should definately work on house manners with them even if its one at a time. They should also experience things like hard floors and stairs and such. You can't predict your future.