Better living conditions are a good start but that still doesn't improve the genetic health of the animals, just their quality of life. What would be ideal is if the shops supplied by rodent farms were not allowed to sell animals anymore, unless they were being supplied by a licensed small breeder or something? I know that shutting down pet farms in the UK wouldn't solve all issues but it would certainly be a step.

The main way to go about it in my mind is to encourage people to buy from responsible, ethical breeders. Not to buy animals from pet shops and to, if possible, buy equipment from pet shops that do not sell animals atall. I breed rats and I offer a delivery service for a small fee if someone wants an animal off me but cannot reach me because of distance. I encourage potential buyers to come in and look at my rats, handle them, look at vet health certificates, handle the babies and ask me any questions atall. Not something you bcan do in a pet shop really because the plebs there will tell you anything just to make a quick sale.

Peace
Akai-Chan