PetArmor Cat

Flea-Free Cats: Injectable Prevention for Lasting Protection

Because fleas are so problematic, flea prevention is essential! Commonly prescribed preventives include oral and topical medications—although injectable flea prevention is available, as well.

Updated on April 1st, 2026

Selamectin for Dogs & Cats: Stop Fleas, Ticks & Heartworms

Search Petco for information on selamectin for pets of all kinds. We have all the details on how to prevent heartworms & parasites to keep your pet healthy.

Updated on October 23rd, 2025

Clavamox for Dogs & Cats: Treat Infections & Keep Pets Healthy

Do you think your pet has a bacterial infection? Visit Petco to learn how Clavamox can help your dog and cat.

Updated on October 23rd, 2025

Stop Fleas, Ticks & Mosquitoes: Pet Pest Prevention for a Healthy Pet

You may have heard that flea and tick prevention are crucial for dogs and cats, but do you know why? Petco is sharing why and how to prioritize pest prevention for your pet.

Updated on October 23rd, 2025

Protect Your Pet: Flea & Tick Control Solutions for Dogs & Cats

Learn how to remove flea and ticks. Petco has flea and tick removal services for dogs and cats. Get fleas and ticks removed at your neighborhood Petco.

Updated on April 9th, 2026

My cat still has fleas after PetArmor. Can I reapply it safely?

In order to get rid of all the fleas you will also need to vacuume your house often including upholstered furniture and carpeted and uncarpeted floors. Put flea powder in the vacuum cleaner bag and discard the bag outside in the trash. This will hopefully remove larvae which live on house dust as well as flea eggs. For every flea you see on your cat, there are at least 10 more fleas in his environment. You can reapply the petarmor in a few days. Make sure it is the preparation for cats and make sure to apply it on the skin between the shoulder blades after parting the hair. Unfortunately, there are fleas that are resistant to fipronil, which is the active ingredient of Petarmor.

My cat still has fleas after treatment. How can I get rid of them?

Unfortunately Pet Armor is a very poor product, and I don't recommend it. Flea collars typically don't work unless you get a good one like Seresto. I would get them Capstar. It's a one time pill that starts killing fleas in 30 minutes. It's safe to give with the Pet Armor, and give it daily until two weeks have passed after you put on the Pet Armor. Then applied a good flea treatment program like Revolution or Advantage. You also have to disinfect the environment, as that will be a continuing source of fleas . Wash their bedding in hot soapy water, and vacuum the furniture and carpet surfaces. You can use a spray to kill fleas in the house, such as Indorex, or a flea bomb would work well to kill the fleas in the home. I hope this helps!

My cat licked Pet Armor Plus. Is her drooling and foaming normal?

Pet Armor is the same active ingredient as Frontline. As long as you applied the correct cat product your cat should be fine. The product is very bitter and nasty tasting, that's why she drooled. To prevent this in the future, be careful to apply the product high on the back of your cat's head and neck only. Watch your cat for signs of illness just to be safe.

What are the best flea and tick prevention products for my cat?

Thanks for using Boop by Petco! In my opinion, the best two flea and tick preventative medications are Bravecto and Frontline plus. Any of those would be good options for him. Good luck and have a good night!

Best topical flea, tick, mosquito, and heartworm prevention for cats?

Love his name! That is awesome! I would recommend Revolution or Advantage Multi. I personally like Advantage Multi better. Any product containing a heartworm prevention is a prescription item so you need to get your vet to either dispense the product or write you a script. I hope this helps. Best of luck with your move!