Most local Miniature Schnauzer clubs have dedicated folks who attempt to place dogs that have lost their homes. They may have been picked up by the local animal shelters. Their owners may be forced to move to homes which do not permit pets. Their owners may no longer be able to care for them. For whatever reason, these pure-bred Miniature Schnauzers no longer have homes of their own.
Policies vary from group to group.
Most of the time the dogs have had at least a minimal health check-up. They have usually been spayed or neutered. They are not for breeding. They are pets deserving of a loving pet home. Usually there is some cost for them.