I have a flea problem in my apartment. I got rid of my cat because I could not afford to treat her, as well as my home. I just used the flea foggers they tell you to use. I cleaned my place like crazy after it was safe to go back in the apartment. I vaccummed the whole place after sprinkling the flea powder every where. The day after I cleaned the apartment I have seen one jump on me and I killed it. I know I will probably still have a few fleas in the house because not all of them will die. I am just wondering since I do not have a cat any more and I did all of the above to rid my house of fleas….If it is at all possible for them to reproduce and cause another flea infestation with just human blood. I nkow they bit humans, they do not live on us. This would be a great relief to find this out.