Although topical flea control products are typically easier to use ... For instance, some cats with sensitive skin can't tolerate a spot-on treatment. "Comfortis is one of the ones I like ...

We advise against flea sprays because topical spot-ons and oral products are more effective. Remember that some dogs with sensitive skin may not tolerate topical products. Crumley says that ...

Flea and tick prevention products play an essential role in keeping ... preventative is difficult to apply correctly to your dog's skin, but the chew doesn't kill parasites on contact.