Barb and pat - I have two cats, one an 18 year old Siamese (female) and one 6 year old Turkish Angora (male. They throw up periodically. From Hairballs. I have a tube of PetroMalt which I occasionally give them, but they prefer to eat grass. Since they don't have claws, i only let them out when I'm out to watch them, because of all the rambling dogs in the neighborhood. What's so bad is, lif they do it while I'm at work, by the time I get home, it has already stained the carpet, and I have to use Resolve to clean it. Tyr the PetroMalt. Maybe it will help. Jo Ann