I've had a neighborhood stray befriend me and I started to feed her (and water bowl). I bought Purina Beyond Natural because it had no grain, but it's expensive. The cat eats a LOT and cries for more. The 3lb bag is empty in a week. Since she's not my cat and I'm on a small, fixed, income, I can't afford $20 a week to feed her. I don't have an indoor pet because I travel a bit to see relatives and would have nowhere to keep one while I was gone plus the expense of one would be too much for me (I've always had cats til a couple years ago but just can't have one inside with this apt lease or my new budget). Anyway, this little sweetling comes to my patio to hang out with me and I thought the occasional feeding would be ok, but it seems she's a chow hound, so now I'm stuck trying to figure out a decent enough food that is much cheaper for my budget. I did do an Advantage treatment on her so that I wouldn't track fleas in the house and she is very happy to have gotten rid of them. I don't know if she'll disappear tomorrow, so I don't want to keep much on hand and it needs to be dry food so I can keep it out since I'm not always home. She drinks a large bowl of water in two days, so water isn't a problem. What brand cheaper than the Purina would work ok, or is there one I could mix with the Purina so she's still getting more meat but something also that fills her up so she doesn't go through so much? Any advice would be helpful. She's adult, med-size, not overweight. Thanks!