Rescue cat - turned up starving and wounded in November. Was wormed with wormer from the vets, then another dose 2 weeks later. I had seen worms in her poop - long thin. January she sicked worms up again long and thin, curled. Another wormer from the vet. End of Feb same thing, worm in sick. Gave the other dose of wormer.
Yesterday - sick with worm in! My other cat has never had this issue. What sort of wormer is best to use? Is there an intensive course?