Can indoor-only cats get fleas?

Yes -- fleas can enter a home on clothing or shoes, on other pets that do go outside, or on items brought in from outside. Strictly indoor cats have lower flea risk than outdoor cats, but it's not zero. Many vets recommend flea prevention for indoor cats, particularly in households where other pets or people regularly come and go from outside environments.

How do I know if my pet has fleas?

Common signs include intense scratching (especially around the head, neck, and base of the tail), visible small dark insects moving through the fur, and 'flea dirt' -- small dark specks in the coat that turn reddish-brown when wet (they are flea feces containing digested blood). Parting the fur over the lower back and base of the tail and looking closely is a practical at-home check. A fine-toothed flea comb can also help find fleas or flea dirt.

Why does my pet still seem to have fleas after treatment?

Most flea products only kill adult fleas -- the eggs, larvae, and pupae in the environment are not affected. Even with effective pet treatment, newly emerging adult fleas from the environment will jump onto the pet for several weeks. Consistent application of prevention over 2-3 months, combined with environmental cleaning, is needed to break the full cycle. If the problem is persistent, a vet visit is worthwhile to assess product choice and application.

Are flea collars as effective as topical or oral treatments?

It depends strongly on the specific product. Older flea collar formulations can offer limited, inconsistent protection. Newer prescription-strength flea and tick collars (such as those with imidacloprid or flumethrin) provide broader and longer-lasting coverage than older over-the-counter versions. Your vet can advise on whether a collar is an appropriate option for your pet compared to topical or oral alternatives.

Is it safe to use dog flea products on cats?

No -- never apply a dog flea product to a cat without confirming it is specifically labeled as safe for cats. Several insecticide classes that are safe for dogs, most notably permethrin, are toxic to cats and can cause severe neurological reactions. Always use products labeled for the correct species, and when in doubt, check with your vet.

Flea Prevention Guide | PetCalculator

Fleas are more than a nuisance -- they carry disease and can cause serious health problems in vulnerable pets. Here is how infestations happen, what the real risks are, and how to keep dogs and cats protected year-round.