Avon Bug Guard Plus. Works better than anything I have tried, and is all natural. I still have some military 100% DEET stuff I would probably have to call in HAZMAT to dispose of. I remember putting it on years ago, then using a pen I had to write something down. The black on the pen actually started coming off on my fingers. I used it a couple times since, but just putting a couple drops on my collar, no more skin contact.