I actually use Sainsbury's Jungle repellent, appears to work well with me
Last year one outing out to Ham wall Somerset left me with :-
Miss shapened forearms, due to bites and reaction, I also managed to pick up a tick on my stomach, goodness knows how has I was warning an heavy cotton t-shirt! Said tick requiring a scalpel removal by my local small injury unit! After my attempts using my dogs tick removers, and various other techniques I know all failed ( I can generally remove a tic from my dogs in under 30 seconds)
I was very sheepish when I arrived at the small injury unit, to explain that I couldn't remove it, and I now had a partial bulls eye! Felt vindicated When after almost an hour trying various sized tick removers, and other techniques they gave up and employed Scalpel method they cut the little bugger out..... Then the debate concerning I have a partial bulls eye, so do I have antibiotics or not, Lyme's disease is rather rife where I live so a major debate concerning the antibiotics as I also have T1 diabetes! it was decided in the end, I was sensible enough to monitor the partial bulls eye, if it got worse in the next month leg it back for the Antibiotics!
So I find that the extra Strong Jungle repellent keeps the mossies at bay, and several packs of Tick removers, kindly supplied by the small injuries unit, as they come in packs of two, they tried several sizes, and gave me the ones they didn't use, and a couple more packs....
I carry in my camera bag at all times, a Gluogen kit, Tick removers, Jungle spray, Foil blanket and Anti septic cream the later purely if I'm bitten I acting fast!
Mossies are a pain in the butt, but Ticks are another thing, they are evil demon's I've know two people who have contracted Lyme's disease after a tick bite, one died around 5 years afterwards and the other survived but had a long period of time of being unwell..
So Ticks and Lyme's disease are something we should be aware of, and carry a Tick remover also check for Ticks after returning from a possible contact site when we're out photographing