Yup fleas can come in on your shoes and clothes and jackets and stuff :P

I would bathe them.. every time mine have had fleas I just use dawn dishsoap and thoroughly scrub them and **very important!!** pick off any fleas you see that don't wash down the drain but are still stuck in their fur, even if they appear to be dead, because sometimes they aren't dead and you can deal with another reinfestation. So pick off and squash EVERY flea that doesn't wash down the drain.

I have never used a topical preventative... my pets get fleas so few and far between usually all I have to do is give them a good bath and check them daily for a few days afterwards, picking off any I see. I am in an area that is high in fleas too so I don't understand why they never get them. NO COMPLAINTS, though! The only time they get fleas is when we visit my parents and they romp around in their backyard... every stinkin' time! But of course my father claims my dogs had fleas before we visited and my dog's infested their cats...