I'm renting my mates' flat and looking after their two cats (Burmese, I think they are). Apart from a 'nice' trip to the vets once/twice a year they are house bound - they have no idea that the outside world exists (if anyone remembers the film 'Bad Boy Bubby' the situation is reversed, at the start of the film, very VERY funny) apart from gazing out the window.
Therefore they have no grass to chew/digest/puke up, so they quite happily tear up and chew two of my rugs - and that is 100% successful in making them puke.
They only eat dried food (but their crap STINKS something awful). I feed them once a day (early morning) and that seems to suffice.
Until the cats got to 'know' me they were somewhat nonchalent and indifferent, but now they follow me around the flat and generally make a fuss of me when I'm reading, foruming and watching TV, so I suppose I've been accepted into their gang of two.