Surprised no-one has replied! Ok, for it's worth
Non raw feeders tend to say that feeding raw food increases the chance of worms (as well as salmonella, e-coli etc), raw feeders tend to say that it promotes a healthy gut and a stronger immune system (and anyway, cats have a digestive system to deal with salmonella and co).
Not sure what the scientific evidence is for either claim.
Anecdotally, our dogs were also raw fed and they were never wormed. They weren't wormed because we would every now and again take a sample of their poo and have it analysed and would only worm if the analyses came back with something. It never did. (This was in Germany, mind, and it actually was cheaper getting the analyses done once or twice a year than to get the worming stuff lol. If anyone knows the prices for doing that over here, then I would very much like to know!).
Friends of mine who feed their cats raw in Germany do that too.
They have never had worms (one of them has been feeding raw for the past 15 years and never had anything).
That is all anecdotal and perhaps a tad controversial.
. I haven't wormed in a while (1 year) - maybe that makes me irresponsible in some eyes. I will ask my vet how much they charge for a poop analyses for worms.
Perhaps, one thing to keep in mind is that inadvertently a chemical wormer is quite aggressive on the gut.
Hope that helps and I am sure someone will be along soon now with a different view
