The vet said to feed her Canned Pumpkin by adding it to her dry cat food, but she won't eat it. e also said to give her Mineral oil can't get her to eat that either. I don't know what to do
A wet food diet reduces/eliminates hairballs. If you are still having problems with hairballs after switching to wet, try egg yolk lecithin. It breaks down the fat in hairballs to help kitty pass them through.