I frontlined my cats the other day because I'm being bitten terribly (thank goodness 10 week old DD isn't, DH also isn't). Have just seen a flea. Am very concerned that she will get bitten (also concerned that we have an infestation) so plan to get proper treatment for the house from the vets, but they were unable to tell me how long to keep DD out of the house for - anyone had this before? Any ideas/suggestions? eek.