The life cycle of the roundworm is complicated. Once ingested, the larvae hatch out in the cat's gastrointestinal tract and migrate through the muscle, liver, and lungs. After several weeks, the larvae return to the intestine to mature into adults.
How long until roundworms are gone in cats?
Most medications are able to kill adult worms within 24 hours of intake. In some special cases, it takes a second dose between 3 and 4 weeks later to kill the rest, which was larvae at the time of treatment.
Do roundworms crawl out of cats?
The worm will only come to maturity inside the intestine. Pieces of the worm then break off and are expelled through the feces. You may be able to spot them in your cat's feces or on the fur near the anus, but in some cases they are passed sporadically, meaning they may not always be found during a fecal examination.
What kills roundworm in cats?
There are several medications for treating roundworm in cats, including fenbendazole, emodepside, milbemycin, piperazine, moxidectin, selamectin, and pyrantel. Your veterinarian will select the remedy best suited for your cat.
How long does it take for roundworm eggs to hatch in cats?
Dogs and cats are infected when they ingest feces with infectious eggs. It takes one to three weeks for the eggs that are passed in the feces to become infectious; however, these eggs can survive in the environment for many months.