IMO calls are more of a waste of money than anything, unless your on very prime land, where you have a lot of control over hunting pressure and deer age structure
there more about marketing gizzismo's that they sell to sucker hunters thinking it will be some magic tool that will get them a deer
can they work , YES they CAN
but some folks win the lottery buying a ticket,. but most DON"T
your IMO< way better off, spending time scouting a better area, and or learning how to become a better hunter than counting on any gadget to get you a deer, buck or doe!
save your money, buy better socks LOL
staying warm and comfortable , will keep you sitting longer and more still and increase your odds WAY more than a deer call ever will IMO!