As stated, skip all the rest of the stuff other than the corn and food plot. Some of the scents might actually be scaring them away if used the wrong time of year.

Next, for 2 weeks, bring the dogs in the garage, or somewhere else out of sight, at night for 2 weeks and see if they will start coming in. Also trail some corn from a known active trail to your yard.

If they are hungry, and don't feel threatened, they will come.