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Roundworm: Treatment and Prevention catipedia-icon2.png

Most cats will contract roundworms at some time during their lives—it’s a common parasite that can be easily treated.

Cats contract roundworms by eating another animal that is infected—like an insect or mouse—or from another cat via feces, typically in a shared litterbox. Kittens contract it from the milk of an infected mother and are particularly vulnerable to the effects. If you suspect your kitten has been exposed, have him or her seen by your vet immediately.

Once the roundworm parasite is ingested, it resides in the cat’s digestive system, then passes through the intestines and emerges in the feces. The worms will be visible in the feces and have a noodle-like appearance. Other symptoms of a roundworm infection include vomiting, diarrhea, loss of appetite, weight loss or a distended belly.

Although roundworm is deposited in a cat’s stomach, it can spread to other organs. And infections left untreated can be fatal. Fortunately, testing for and treating roundworm is fairly simple: Your vet will use a fecal test to determine the presence of the parasite, and if the test is positive, your cat will be given an oral deworming pill. Two or three rounds of deworming medication may be required.

Clean litterboxes can help prevent a recurrence of roundworm. Monthly flea medications can also help—some are created to kill roundworm larvae in addition to preventing fleas. Kittens should be given deworming medication until they are a year old, so talk to your vet about what to use and how often.



Below you'll find answers to some of the most frequently asked questions about our company, our products and caring for your cats. If you have a question that isn't addressed here, please feel free to contact us.

Q: How can I email or talk with the Purina Pet Care team?

A: If you would like to talk with us, please contact us here or call us at 1­-888­-228­-2469.

Our Hours of Operation:

  • Monday through Friday 7 a.m. to 7 p.m. CST
Q: How are Purina Cat Chow products different from other healthy pet foods?

A: Inside every bag of Purina Cat Chow you'll find a selective blend of protein, fat, and fiber. Everything we use in our premium cat food formulas has a place in your cat's healthy diet.

Q: How can I be sure of the quality of the Purina Cat Chow products?

A: Our top priority is the quality of the food that nourishes not only your pets, but the pets we share our lives with, too. So from source to bowl, the quality of our food is assured by taking the following steps:

Ingredient Sourcing

  • Purina ingredient sourcing and processing meet or exceed FDA, USDA or AAFCO standards for pet food. And every supplier of ingredients for Purina products must meet our stringent standards for ingredient specifications, product safety, sanitation and manufacturing practices.
  • Ingredient Testing
  • All of Purina's North American manufacturing facilities have on-site quality assurance laboratories and staff. And we're working to expand the use of technology to further screen ingredients for quality assurance.
Q: Where is your food manufactured?

A: 99% of all Purina-branded pet food products sold in the U.S. are made in Purina-owned U.S. manufacturing facilities. Purina's sophisticated tracking system ensures important measures of control: All raw ingredients are tracked from time of receipt at our plants, through their inclusion in finished products, and on to retailers.

Q: I am unable to find a particular product in my area. Can you help me locate it?

A: Yes, we can help. Although distribution of our Purina Cat Chow products is national, not all stores carry all sizes and varieties. Contact our Customer Service department via our Contact Us page or call us at 1­-888­-228­-2469.

Q: Do you offer coupons?

A: We recommend signing up to become a member of our MyPerks loyalty program to receive exclusive offers. We also offer coupons in local papers, through direct mailing programs and via emails to registered members. Make sure to watch for sales or promotions at your local retailer as well.

Q: Where can I find articles and information about my cat?

A: We believe there's always more to learn and to share and that discovery should be fun. It's one more way we're helping you and your cat share a better life together. Visit Catipedia for articles and information and... a little bit of fun.

Q: Help! My cat has a health issue and I’m not sure what to do.

A: We strongly recommend talking to your veterinarian for immediate answers to urgent situations. While is an excellent resource of information provided by cat care experts, your veterinarian can provide the best care for your individual cat.