I've been hunting for a while but have never really used many scents
so the following may be a dumb question(s). When and how do hunters use the following scents?

doe estrus?
buck urine?
tarsel gland?

Like I said I've hunted for a while, but I'm just trying to increase my chances. That's what us hunters are supposed to do isn't it? Thanks in advance for your help and good hunting.