The only other thing that has ever helped with Tubby, my chronic hairball machine, has been regular brushing. Because think about it, if the hair ends up in the brush, it can't end up in her stomach. She may not like the brushing, but if you start slow and just do a little bit everyday, she may grow to love the brushing sessions. Just be gentle and don't tug too hard or it will hurt and she will grow to hate it.

And yes, amazingly enough, with my two, Tubby is so much worse with hairballs than Peanut is, and Peanut is the one with the long hair - go figure.