I feed a large band of feral cats (around 20) through the winter. It's very hard for me to get there every day but I go 2x a week. I'm wondering what's the best to feed them nutrition wise? What will give them all they need at a low cost? Right now they're eating the cheapest food simply because there's so many and they go through it so fast. Anything I can add to the food to add bulk without decreasing nutritional value? Tricky situation. I'm out of a job currently so I can't feed expensive food. I tried finding help from other rescues but nobody wants to help. Any ideas? Also what is a simple shelter I can build them? They all live in a large barn with many rooms but nothing to hold in heat. No straw. Please help!