When you are baiting your sites – try to make some noise. First of all so you don’t startle the bear(s) and find yourself in a situation. Secondly – so they get trained to the dinner bell. I personally whistle as I walk down the trails and always with the same stride. Some bears tend to stay nearby in bedding areas or just beyond the bait sight waiting for their next meal. I have seen a number of them come in on camera just a few minutes after I finish resetting the sight and leave. Some have even given me a hard time to get out of there so they can come in to eat. I find it safer to have a routine – so we both know what to expect.
Like most manmade creations – I find it unethical to utilize them to trigger a reaction in the bears much like Pavlov’s dogs. Baiting with your ATV makes sense in rural areas, but at least turn off the machine and walk in a significant distance with the bait. Taking the muffler off your old truck and driving through the woods is just plain lazy and you should get nailed to the wall by the DNR.