I've been going through a learning process about fleas this weekend, as I just Friday night discovered that Red Cat has them. I've read, for example, that only about 1% of the fleas in one's house are in the adult stage. I'd suggest that you read up more about them, too, so you know what you are up against with an allergy. Here is a fact page from this website:http://www.thecatsite.com/cat_care/care.php?a=fleas
Here are a couple more I found helpful:http://www.purinaone.com/dogcare_con...leNumber=30035http://dermatology.cdlib.org/DOJvol3...eas/fleas.html
Here is the link to my thread about my flea problem where people offered a couple more suggestions:http://www.thecatsite.com/forums/showthread.php?t=37709
And here is a search result that will give you many more choices of articles, from which you might want to select a few more:http://www.google.com/search?as_q=fl...h=&safe=images
When I first got Red Cat as a three-year-old, he had been an outdoor cat and had a lot of fleas. I took him to the vet's office who at that time had an assistant who would bathe cats and give them some type of flea dip. Red Cat is a highly anxious cat, a strong 15-pounder, and I would be torn limb from limb if I tried to bathe him myself. The vet's office had to give him a tranquillizer to bathe him. I'm not sure if my current vet has an assistant who does that. I'll check tomorrow. But I have Red Cat on Advantage, gave it to him about two weeks ago last time, and obviously he has developed an immunity to it. I've tried Frontline in the past and found that it wasn't that effective for Red Cat at the time. So I'll see what the vet has to suggest tomorrow.