There are dozens of
flea control
products on the market that fall into many categories: with / without heartworm and intestinal parasite
prevention, with / without tick control, prescription and over-the-counter,
topical and oral,
products that kill adult
fleas and those that block the development of immature
fleas, those that are greatly affected by bathing and others that aren't, some that are very safe for one species and toxic to other types of pets.