Dogs with incontinence problems usually seem unaware that they've soiled. (pets.webmd.com)
Some female dogs develop urinary incontinence problems after spaying. (cuteness.com)
They're also handy for dogs that have incontinence problems due to age or illness, for small dogs that can't go out due to predators, for dogs stuck inside during bad weather, and for use while traveling.» (hartz.com)