The situation with the moths is as follows. I have had various moth repelling sachets etc inside my wardrobe for years. When I got back from Australia in mid-March and went into the bedroom I found a dozen or so moths circling round the bedside lamp. Since then they have proliferated. They are on the ceiling, on the walls and crawling around occasionally on the duvet. Several hundred were lounging around on the carpet at the top of the stairs, and I hoovered them up, which seemed to do the trick. Several times a day I go at the moths on the walls and ceiling with the nozzle of the vacuum cleaner, but more always come to take their place. So far they don't seem to have eaten anything I can find in the wardrobe, but the cashmere is in sealed bags and all my good clothes are in protective covers. I feel that the sachets and whatnot are keeping them out of the wardrobe but in the room itself. Last night I found them inside a pair of Uggs. Another black mark for that footwear.
I just had a long conversation with a very nice man from here, who told me to buy one of these, which I have done.
UPDATE UPDATE UPDATE
I have just carefully gone through my wardrobe. So far, no holes. I wonder if I have ever really needed seven little black dresses.
I realise that the moths are emanating not from the wardrobe but from the carpet on the hall stairs outside. As one commenter said, what you need is a crevice tool attached to the vacuum cleaner to carefully go along the edges of the carpet and the area where each stair meets. I have now vacuumed and with my new moth genocide kit which arrived this morning, put down insecticide. The advantage of going through my wardrobe was that I realised what pieces I had too many of and what was missing and bought a top at COS this morning. And a long necklace which it obviously needed. So there's always a silver lining, eh, girls?