I honestly don't know how you make people care, making it harder for them to obtain the dogs in the first place is probably the start though. And making it harder for them to get them back if they are picked up. As for the breeder, any reputable breeder will step up and pay to have it shipped back, or try and find it an approved home in the area. The breeder of my male Shiba had to fight an SPCA that one if her shelties was dumped at, he was 12-13 years old, they didn't want to send him back to her because she was 'out if the adoption area', that is total BS. She had to have her son go to the SPCA and adopt the dog and bring him to her. And if the fee to not ship the dog back is more then the cost of the shipping I bet even crappy breeders would do it. And maybe they will re think breeding that next litter if it happens a few times.