Last year in Montahoming was absolutely terrible for mosquitoes.

As result I ended up buying a small bottle of 100% DEET and putting it in
my vest. Today as I set out to wash and reorganize said vest I found that
it had leaked, melted some of the nylon vest itself and mucked up the
outside of a big, expensive, C&F waterproof box as well as ruining a set of
small magnifiers I used to look at bugs and a couple other items

This is the second time over the years I've had insect repellant damage
fishing equipment

..... be aware