I bought a set of undergarments from Cabelas. I will have to check the specific model but it has deoderant built into the garment and lasts for the life of the garment. The "silk weight" version of it is extremely light and can be worn both in the early and middle seasons. I am heading there shortly so I will see if I can find it again.

I honestly believe it works because I had deer quite close to me last season and was never scented....and alot of bucks at that.