I bought some scent bombs and was just wondering with any kind of deer pee; how long befor you hunt should you put it out? A day or overnight. I usually put it out will walking to my stand right before I hunt. Is this the correct thing to do? ALSO the broad heads that spread open when they hit the deer, are they worth the money? I have the normal 3 bladed ones but was thinking about buying some of the kind that fly open. Thanks