Not one. All summer. Their absence is alarming as their past invasions. They have even retired from our screens. There used to be films in which ants were as numerous and invasive as refugees from Syria, Think ‘The Naked Jungle’, ‘Them’. Now they don’t even get a look-in in David Attenborough documentaries. Have they merely taken a sabbatical from our kitchens, or have they retired permanently to their underground bunkers, these doomsday preppers of the insect world?