Sorry to be so graphic, but my Debra vomited live, wriggling "angel hair pasta" (roundworms) and this was well AFTER we had her stool sample tested and there was supposedly no infestation!!!

Apparently, not all worm infestations show up upon stool examination, so be forewarned!

She was a TNR so of course was outside exposed to who knows what, and the stool sample thing was part of her spaying and general health exam. I had decided to adopt her and introduce her into the househould. She had been strictly inside, recuperating from her surgery, when this barfing incident occured a few weeks later! Poor thing had these worms growing inside of her, undetected. A vet tech told me that it is common for a fecal exam NOT to show ALL worm infestation. So . . . what good is it???

My vet's recommendation to anyone who has cats that venture outdoors is to administer a Drontal pill every 3 months, as a precautionary/prevention tactic. Ingestion of one infected flea can initiate the internal parasite process.

From my experience, any cat trapped/rescued from outside that will be introduced into a household should undergo the injectable Drontal during physical examination, which should eliminate any worms right off the bat. No surprises at a later date!