I am a magnet for the little $**ts. Try standing 10 feet from me and you'll be fine.
Taking odourless garlic capsules a few weeks before going abroad works for mosquitoes ime. Before I always got eaten, since I started taking them before I go I've only ever been bitten a few times. Never worked (noticeably) for me with midges though.
Permithrin definitely works for ticks, I watched one walk over my untreated glove onto my treated gaiter and go all weird walking in different directions, fast, slow, fast then die a minute or two after.
High % Deet works quite well for midges but it's horrible stuff, don't get it on your lips.
Smidge helped a little but not much.
Citronella oil stuff (can't remember exactly what it was) was similar to smidge.
Bog myrtle oil is supposed to work? Not tried it.