Stick the patch on your arm, like a nictoine or HRT patch and, it's claimed, the midges will stay away.
From the Highland Midge Company website:
"Research in Australia and Canada found that biting mosquito's, midges and flies hate Thiamine (also known as vitamin B1). People who had consumed quantities of food containing it were much less likely to be bitten. Vitamin B1 or Thiamine is naturally excreted in sweat and urine and you need a constant source to keep up the protective effects.
These patches contain huge quantities of Thiamine and a continuous amount enters your system through the skin. After a few hours of wearing a patch enough Thiamine will be present in your sweat and breath to keep the little blighters at bay."
One patch is meant to give one days protection and a pack of ten patches costs £9.99. This was front page news in the Press & Journal today.