One very bad drawback from bug spray is that it will get on the meat when you butcher it. Try treated clothes or lots of vitamin B12. Just in case the bear thinks you are food try to avoid smelling like food. Skunk sent is another idea that will eliminate human oder, for the serious hunter. Sent your clothes and keep them in a sealed container until you are ready to hunt. No sence in stink'n up the truck, Or make sent rags to hang close to your blind. Try a preditor call on tape if you can, that black bear cub bawl is one I'd suggest. You can also use a rabbit call by mouth. They can come in a bit agressive so have a partner watch your back.