There's a pill for sale in the UK called '4Fleas', in a scary pink packet. One pill fed to the cat or dog (different doses, make sure you get the right one) and within 15 minutes you can see the little varmints dropping right off. The good thing about the pill is that you can give one to the cat every day for a week, to break the cycle, and also to feeding queens and quite young cats (I threw away the last packet but I think it's about 8 weeks and older). The bad thing is, it's quite expensive for a 6 dose pack.

Regular vacuuming, steam clean floors and carpets, wash sofa throws and loose covers often.

LTS