What is the best bug repellent?

[BriBri]

I couldn't find anything on the topic using the Search function, so here it goes:

While I am using Sawyers Permethrin for my clothes, I was wondering what is the best (or at least effective and reliable) bug repellent spray/lotion for the skin, particularly for use in a tree stand? While I plan on having the Thermacell going for my bear hunt in a couple of weeks, I don't want to have to run that thing all day, every day. Anyone have any thoughts/preferences on this? Would a simple DEET product work (like Deep Woods Off)?