I see these buck bombs in catalogues do they really work, if so how do you use them (technique ie when do you use them in the morning, afternoon,how long do you stay after they go off etc..)

I like them, I just spray it out a little at a time. I can make it last about 3 hunts. Seems to really get the scent in the air. Be careful about the wind or you'll be eating the stuff.