Hints and Tips ?Fleas living under exposed floor boards can be difficult to treat and hatching may be prolonged. Try using a hairdryer directed into these cracks to encourage hatching. ?When an infestation is established, adult fleas may be seen for some weeks following spraying. This is because the existing pupae must hatch before they can be killed, it is quite normal and the flea spray will still be working. ?When the heating is turned up or an unused room is disturbed this can activate dormant fleas. ?Human bedding and clothing does not need to be sprayed; a warm wash will kill eggs and larvae. ?Remember to treat the whole house, the car and any outbuildings frequented by the pet. ?Vacuum living areas before going to bed and bedroom areas in the morning. This will ensure rooms are vacant after vacuuming thus reducing the likelihood of fleas biting you!