Hi frontline combo(from vets)is very good at prevention as it breaks the life cycle in your home as well as on the cat.if kitty will be going out regular use(4-6 weeks)will prevent any more outbreaks.never buy supermarket brands e.g sherleys,bob martin as these are useless.Also make sure kitty has been wormed well as fleas transmit worms,again dont bother with supermarket brands
