Does anyone know a flea treatment that kills super fleas: we have a room that is covered in fleas; we have no animals in there; have sprayed every thing possible including bleach; the fleas are still alive: even after g oing through the washing machine; (on some clothes) they are still alive::the other rooms are fine; just this spare room; we had two wild cats living up there;they are fine; its just all these fleas: any suggestions?