Woods + sweat = bugs!

[VeloVT]

Hi Ladies,
I participated in a women's beginning MTB clinic last week. It was lots of fun and I want to try MTBing more... but I got eaten alive by mosquitos! We were in deep woods in the evening, and the mosquitos were enormous, plentiful and aggressive.

If I do this more I'm going to need some kind of insect repellent... What do you use (or do you use it while MTBing)?

I would really like to find something that does not have lots of scary, potentially toxic chemicals (and I'd rather not have an aerosol spray either).

This looked interesting:
http://www.drugstore.com/products/pr...BUY-PLST-0-CAT

and so did this:
http://www.drugstore.com/products/pr...BUY-PLST-0-CAT

and this:
http://www.gaiam.com/product/eco-hom...pellent+set.do

Would be interested in hearing feedback on these or anything else you've used.

Also, Lyme Disease is becoming more common in Vermont, so all the more reason to use repellent in the woods...

Thanks for your help!