I am currently travelling the U.S. in an RV, and I do a lot of hiking/biking/camping in remote areas. I'm sure a lot of other HN readers do as well.
What are some of the best proven ways to keep ticks off of yourself?
An alternative is Avon Skin So Soft. Theres a good bet you'll hate the smell, and it has shown to be less effective than DEET but seems to be regarded as completely safe. But, to me I feel like I've always had better results for repelling gnats/flys using it over DEET based sprays.
My clothing is treated with Permethrin (it's standard for military uniforms, and available for outdoor clothing as a cream or spray). You have to be a little careful with laundering (avoiding dry cleaning).
DEET (and sunscreen) for skin and near edges of clothing.