Our indoor cats have had them really badly this Summer (we are baffled as to how they caught them too), by the time we realised they had them, they were crawling and so uncomfortable. We used the Frontline combo for 2 months and it was not working on it's own... as we needed to treat house as well. We have used 2 full cans of RIP flea to treat the house, but to be honest, if we have them in a month, I will buy another can of it. It seems to be helping. For people with cats, you need to use a flea comb several times a day to remove teh flea dirt, eggs etc off the cats, as the flea larvae eat teh flea dirt and the eggs fall off the cats as tehy walk about the house... so hoovering constantly, brushing cats and treating the home are needed.....
They were biting us without us realising it - very small itchy red lumps mainly around our ankles.... some people don't find them itchy, but when we looked we had little red marks from them! Yukk yukk!!! We are not allowing the cats into bedrooms until the whole house and they haev been clear for some weeks.
Remove plants, pets and fish when treating a house until some hours later.....
I was told that if you see fleas on the cats - that is only 5% of the fleas you will have in your home and the eggs take 2-10 days to hatch, so keep on top of the problem.
We are stick of constantly washing bedding and tumble drying it to ensure any eggs are killed too....