All these good ideas!! Thank you all
I'm going to be scientific - I have three tiny beds and I'll try the coffee grounds on one, the egg shells on another and a beer trap (though it does seem a shocking waste....) on the third. And I'll report back. I don't have fleece, but I do have a surfeit of cavalier King Charles Spaniel hair that I use to keep possums away from the glasshouse. Would that work as well?
I'll try it and let you know.
It rained all day yesterday (it's supposed to be Spring down here) but I went out anyway with the first of the coffee grounds. You'd all have been very proud.
I suppose you chaps are all heading into winter now.... I hope you get the kind of winter you enjoy best.