In reply to rallymania:
Agreed on all counts, Arran can be really bad.
I was hounded by them at the weekend at Dalwhinnie, the worst I've seen in years. I used to think if you kept moving then they weren't too bad, but how wrong I was.
Avon SsS is okay apart from the fact it stinks, is a bit oily and the little darlings die on you and your face is covered in dead midge.
Watch for DEET products on tents, watches and plastic, it does a great job of melting them.
The recent weather is just what they like warm and damp.