You should be able to get the council to come and fumigate the house, sounds extreme but all they do is mix some chemicals and spray on the carpet and soft furnishings. Costs about �30-�40 depending upon area of house and lasts for about a year to 18 months, sometimes longer. If you call the environmental health dept and say you want your house sprayed to kill cat fleas they should sort you out fine. Great thing about it also is that you're not allowed to hoover for a couple of weeks afterwards, one less chore! Oh just remembered, remove or cover any polished wood because the spray can mark it.