I am confused about the "calling" process, so I am just going to ask the question.

I have the lil can, original can, buck roar, and rattling sticks.

Do you call ONLY if you have seen a deer, or is it OK to use it if you haven't seen anything? Could calling prevent a deer from coming close to your stand? Also, which do you use for does, and which for bucks?

Any input will be so appreciated. Thanks.