Question about leads calling in from marketing

[Reggie Youngblood]

I am trying to become more efficient with my business, and answering every single phone call seems like an inefficient way to screen leads. So I was wondering was it best to just let the leads go to voicemail which describes who I am, what I do, etc. I feel like this will qualify the leads that are truly motivated, and get rid of those that are tire kickers. Any thoughts on this approach?