Great question chaselton. First, it depends on what time during bow season that you are using these calls. Don't be too eager to jump the gun right off the bat in early October as they are not yetresponding to the "sounds of the rut" during this time. Late October through the first two weeks of November is when you'll find yourself having great success with both calls separately or in combination with each other. Having said that, also consider adding some rattling and asnort wheeze to your callingsequence. Also check out the "growl" byM.A.D. calls. Geographic location and weather patterns play a major role in when the "rut" kicks in. There is also time in December that the "2nd rut" kicks in, in which some of the younger does and fawns come into estrus. Check with your state DNR on when they feel that time is, as this is another good oportunity to let loose a grunt or two. As far as January goes, it takes next to nothing to spook a deer off of a food source or anywhere for that matter. I would not recommend using calls at that time. However, if legal in your state, you may find some late season success hunting over bait. i.e. corn, protien pellets, mineral/salt licksand especially biologic food plots. Hope this helps! Good luck and happy hunting!