Went camping twice in Scotland last year (week in July, long weekend in September), and had plenty insect repellant spray to keep the Scottish Air Force at bay. (that's the midgies incase you didn't know
)
After the first trip I couldn't work out why I had a smudge/smear type thingy on part of my visor which wouldn't clear off. It had a rough feel to it, and I thought at first it had been a large bug/fly or something like that.
However, on the second trip it got worse and I noticed that the smudgy/smeary thingy was getting bigger and that it was caused by the top layer of the visor coming off. What had been happening was that once the tents were up, there were so many of the little midgie TW*TS in our tents that we were very trigger
happy with the repellant spray, hoping to kill what was already inside
and discourage the 3,999,900 of his cousins that were already with 10 feet of the tents.
I was really p*ssed off cos the helmet was new for the beginning of "last season", and I've already had to fork out for a new visor.
It has also taken the shine off the rest of the helmet, it's now a bit "DULL".
Just thought I'd mention it, so if you're thinking of going camping make sure you do actually pack the helmet cover/bag.