- And got the T-shirt
If you're going to talk with the owners, I would recommend coming up with a plan for telling them why proper care is beneficial to them (the owners). For example, proper sized cages are more expensive than fish tanks and storage bins. If they provided proper sized cages for sale, along with the pigs, they would stand to increase their revenue. As they stand right now, by showing cheaper alternatives, they are reducing a potential way to make more money. If they house same sex pigs together, they also stand to increase the chance of selling two instead of one. Especially if they push for how important it is for pigs to be in pairs. As for hay, I'd suggest they get their hay in a large bale or in bulk from a feed store, you can get a bale for less than $10) or farmer. Suggest they use this hay for their store pigs, and then turn around and sell bags of Oxbow or Kay-Tee or whatever they have. That way they can make money off selling the hay to customers who purchase pigs.
If you can convince them that they'll stand a better chance of making money with proper care, you're more likely to see proper care.