While in our finca in the hills of Tortosa in September poor Alan was being plagued by the black flies. There weren't really many
of them around but 1 is too many for him! I found I had packed some spray on insect repellent which I had left over from our holiday
in the Dominican Republic.  After spraying his arms and legs the flies decided that he definitely did not have the lynx effect and made
their way to me. It's called 'bugproof insect repellent" made by nomadmedical.  It has 50% deet.  We will definitely experiment some
more with it next time when we are down and I have already ordered a few litres of it!
Cheers, Haze