A sanitizer apparatus (100) for a handle (101 ) on a door (102) has a sanitary fluid reservoir (1 ) and associated atomising pump (2) which discharges to one or more spray heads (5). A pump actuating means (24) is operatively connected to the door handle (101) so operation of the door handle (101) operates the pump (2) to spray disinfectant at the handle (101). The pump actuating means (24) includes a time delay mechanism so that a person opening the door (102) will have removed their hand from the handle (101 ) before spraying commences.