My boy Hisser, an inside cat, is persistently trying to eat green stuff. I just put my peace lily on a tall stool in the middle of the room; it's mildly toxic. I dumped the compost because he pulled a leek top out of there: no onions for cats. I have never bought any of those pots of grass stuff they sell at upscale pet stores, but am considering it. Would digging a little grass from the lawn be suitable? Some vegetable from the fridge? I don't treat the lawn with anything. He has dry catnip, but isn't interested.